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Journal articles on the topic 'Philip's equation'

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Published: 4 June 2021
Last updated: 1 February 2022

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1

Sutikto, Tarsicius, and Kunihide Chikamori. "Evaluation of Philip's infiltration equation for cultivated upland terraces in Indonesia." Journal of Hydrology 143, no. 3-4 (1993): 279–95. http://dx.doi.org/10.1016/0022-1694(93)90196-g.

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2

NAKAEGAWA, Tosiyuki, Taikan OKI, and Katumi MUSIAKE. "Aggregation of distributions of infiltration parameters using its aggregation criteria derived from Philip's equation." Doboku Gakkai Ronbunshu, no. 642 (2000): 1–18. http://dx.doi.org/10.2208/jscej.2000.642_1.

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3

R. J. Kunze and W. H. Shayya. "ASSESSING THE VALIDITY OF THE PHILIP'S TWO-TERM EQUATION IN DOWNWARD INHLTRATION AND CAPILLARY RISE." Transactions of the ASAE 34, no. 5 (1991): 2047–51. http://dx.doi.org/10.13031/2013.31835.

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4

Marino, John A. "Creative accounting in the age of Philip II? Determining the ‘just’ rate of interest." Historical Journal 36, no. 4 (1993): 761–83. http://dx.doi.org/10.1017/s0018246x00014497.

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ABSTRACTDeficit financing, revenue projections and interest rates in Spanish Naples provide the context to reflect upon the exigencies of debt resolution, the illusions of mathematical certainty and the perils of temporizing in political decision-making. ‘Creative accounting’ explores the micro-history of an equation, which provided the mathematical rationale to lower Spanish interest rates to 3·3 per cent and to resolve the controversy over the ‘just’ rate of interest. In an attempt to generate revenues during the Spanish financial crisis of the 1570s that surrounded Philip II's second bankru
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5

Cundy, Terrance W., and Scott W. Tento. "Solution to the Kinematic Wave Approach to Overland Flow Routing With Rainfall Excess Given by Philip's Equation." Water Resources Research 21, no. 8 (1985): 1132–40. http://dx.doi.org/10.1029/wr021i008p01132.

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6

Dumbrovský, Miroslav, Ivana Kameníčková, Jana Podhrázská, František Pavlík, and Veronika Sobotková. "Evaluation of soil conservation technologies from the perspective of selected physical soil properties and infiltration capacity of the soil." Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis 59, no. 1 (2011): 37–48. http://dx.doi.org/10.11118/actaun201159010037.

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This paper evaluates different technologies of soil cultivation (conventional and minimization) in terms of physical properties and water regime of soils, where infiltration of surface water is a major component of subsurface water. Soil physical properties (the current humidity, reduced bulk density, porosity, water retention capacity of soil, pore distribution and soil aeration) is determined from soil samples taken from the organic horizon according to standard methodology. To observe the infiltration characteristics of surface layers of topsoil, the drench method (double ring infiltrometer
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7

Jagani, A. H., P. K. Shrivastava, and D. K. Dwivedi. "Evaluation of Kostiakov’s and Philip’s infiltration models on the soil of Dediapada, India." Journal of Applied and Natural Science 10, no. 3 (2018): 1073–77. http://dx.doi.org/10.31018/jans.v10i3.1845.

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Infiltration models are used in designing and optimizing irrigation projects as they are capable of predicting infiltration rate and accumulated infiltration depth to a reasonable level of accuracy. The objective of this study deals with obtaining the parameters of infiltration models like Kostiakov and Philip, applying these models to the soil of Dediapada and evaluating their performance by comparing it with the observed infiltration. Firstly, the accumulated infiltration and infiltration rates were determined by the field measurement using a double ring infiltrometer. Kostiakov’s and Philip
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8

Poulovassilis, Alexander, and Ioannis Argyrokastritis. "A new approach for studying vertical infiltration." Soil Research 58, no. 5 (2020): 509. http://dx.doi.org/10.1071/sr19266.

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The exact contribution of the pressure head gradient term during the vertical infiltration process, occurring in homogeneous porous media under zero ponding head, is determined analytically to advance the knowledge related to the infiltration phenomenon. This contribution is smaller than that of the horizontal infiltration by a factor at which is a measurable function of the infiltration time t, characteristic of each porous body. By adding to this contribution that of gravity, a new two-term analytical equation is formulated which exactly reproduces an available vertical cumulative curve and
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9

Mollerup, M. "Philip’s infiltration equation for variable-head ponded infiltration." Journal of Hydrology 347, no. 1-2 (2007): 173–76. http://dx.doi.org/10.1016/j.jhydrol.2007.09.015.

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10

Ma, Wenmei, Xingchang Zhang, Qing Zhen, and Yanjiang Zhang. "Effect of soil texture on water infiltration in semiarid reclaimed land." Water Quality Research Journal 51, no. 1 (2015): 33–41. http://dx.doi.org/10.2166/wqrjc.2015.025.

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The infiltration of water and its influencing factors in disturbed or reclaimed land are not well understood. A better understanding would provide essential information for assessing the hydrological processes in disturbed ecosystems. We measured the infiltration of water in soils from loamy and sandy reclaimed land. The relationships between infiltration and soil properties were analyzed based on three models: the Kostiakov, Philip, and Green–Ampt equations. Our objectives were to understand water infiltration in reclaimed land with a variety of soil textures and to establish the dependence o
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11

Molina, A., G. Govers, A. Van den Putte, and V. Vanacker. "Reducing the hydrological connectivity of gully systems through vegetation restoration: combined field experiment and numerical modelling approach." Hydrology and Earth System Sciences Discussions 6, no. 2 (2009): 2537–71. http://dx.doi.org/10.5194/hessd-6-2537-2009.

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Abstract. Restoration of degraded land in the southern Ecuadorian Andes has led to alterations in the functioning of degraded catchments. Recovery of vegetation on areas affected by overgrazing, as well as the reforestation or afforestation of gully areas have given rise to modifications of hydrological connectivity within the catchments. Recent research has highlighted the ability of gully channels to trap sediment eroded from steep slopes, especially if vegetation is established along the gully bed. However, vegetation cover not only induces sediment deposition in the gully bed, but may also
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12

SIEBERT, DIOGO NARDELLI, LUIZ ADOLFO HEGELE, RODRIGO SURMAS, LUÍS ORLANDO EMERICH DOS SANTOS, and PAULO CESAR PHILIPPI. "THERMAL LATTICE BOLTZMANN IN TWO DIMENSIONS." International Journal of Modern Physics C 18, no. 04 (2007): 546–55. http://dx.doi.org/10.1142/s0129183107010784.

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The velocity discretization is a critical step in deriving the lattice Boltzmann (LBE) from the Boltzmann equation. The velocity discretization problem was considered in a recent paper (Philippi et al., From the continuous to the lattice Boltzmann equation: the discretization problem and thermal models, Physical Review E 73: 56702, 2006) following a new approach and giving the minimal discrete velocity sets in accordance with the order of approximation that is required for the LBE with respect to the Boltzmann equation. As a consequence, two-dimensional lattices and their respective equilibriu
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13

NAKAEGAWA, Tosiyuki, Taikan OKI, and Katumi MUSIAKE. "DERIVATION OF EQUATIONS OF SPATIALLY-AVERAGED INFILTRATION AND THEIR AGGREGATION CRITERIA BY USING PHILIP'S EQUATIONS." PROCEEDINGS OF HYDRAULIC ENGINEERING 42 (1998): 175–80. http://dx.doi.org/10.2208/prohe.42.175.

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14

Madani, Douib, Salah Zitouni, and Djebabla Abdelhak. "Well-posedness and exponential decay for a laminated beam in thermoelasticity of type III with delay term." MATHEMATICA 63 (86), no. 1 (2021): 58–76. http://dx.doi.org/10.24193/mathcluj.2021.1.06.

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We study the well-posedness and asymptotic behaviour of solutions to a laminated beam in thermoelasticity of type III with delay term in the first equation. We show that the system is well-posed by using Lumer-Philips theorem and prove that the system is exponentially stable if and only if the wave speeds are equal.
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15

Coxeter, H. S. M. "The Simplicial Helix and the Equation tan nθ = n tan θ". Canadian Mathematical Bulletin 28, № 4 (1985): 385–93. http://dx.doi.org/10.4153/cmb-1985-045-5.

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AbstractBuckminster Fuller has coined the name tetrahelix for a column of regular tetrahedra, each sharing two faces with neighbours, one 'below' and one 'above' [A. H. Boerdijk, Philips Research Reports 7 (1952), p. 309]. Such a column could well be employed in architecture, because it is both strong and attractive. The (n — 1)-dimensional analogue is based on a skew polygon such that every n consecutive vertices belong to a regular simplex. The generalized twist which shifts this polygon one step along itself is found to have the characteristic equation(λ - 1)2{(n - 1)λn-2 + 2(n - 2)λn-3 + 3
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16

Miller, John Boris. "The foliage density equation revisited." Journal of the Australian Mathematical Society. Series B. Applied Mathematics 27, no. 4 (1986): 387–401. http://dx.doi.org/10.1017/s0334270000005038.

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AbstractThe foliage density equation is the means by which the foliage density g in a leaf canopy, as a function of the angle of inclination of the leaves, is to be estimated from discrete data gathered using photometric methods or point quadrats. It is an integral equation relating f, a function of angle estimated from measurements, to the unknown function g. The explicit formula for g is known and depends upon f and its first three derivatives; the operator f →, g is unbounded, and the problem is ill posed.In this paper we give the form of g when f is a trigonometric polynomial, extending ea
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17

Bristow, KL, and MJ Savage. "Estimation of parameters for the Philip two-term infiltration equation applied to field soil experiments." Soil Research 25, no. 4 (1987): 369. http://dx.doi.org/10.1071/sr9870369.

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Two methods based on least squares analysis used to estimate coefficients in the Philip two-term infiltration equation are compared. The one method maintains the infiltration equation in its original form, while the other involves a mathematical transformation which introduces self-correlation and yields different estimates of the coefficients. Data from field infiltration experiments are used to illustrate these differences, and the need to distinguish between fitting data to empirical models and deriving system parameters from analysis of physically based models is emphasized.
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18

Mollerup, Mikkel. "Erratum to “Philip’s infiltration equation for variable-head ponded infiltration” [J. Hydrol. 347 (2007) 173–176]." Journal of Hydrology 355, no. 1-4 (2008): 214. http://dx.doi.org/10.1016/j.jhydrol.2008.03.024.

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19

Liu, Ning Ning. "The Numerical Solution of Richards Equation Using the Lattice Boltzmann Method." Applied Mechanics and Materials 188 (June 2012): 90–95. http://dx.doi.org/10.4028/www.scientific.net/amm.188.90.

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The Richards equation is applied to describe the unsaturated soil moisture movement. The Lattice Boltzmann method is developed to solve this partial differential equation. The accuracy and efficiency of the Lattice Boltzmann method in modeling unsaturated soil moisture movement are compared to the Philip series method as well as Crank-Nicolson finite difference scheme. The results reveal that all three methods provide solutions of comparable accuracy. The computation efficiency, accuracy and simplicity of the Lattice Boltzmann method indicate that it has the capacity to model unsaturated soil
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20

Zerbe, Gary O., Philip G. Archer, Natalio Banchero, and Andrew J. Lechner. "On comparing regression lines with unequal slopes." American Journal of Physiology-Regulatory, Integrative and Comparative Physiology 251, no. 6 (1986): R1239. http://dx.doi.org/10.1152/ajpregu.1986.251.6.r1239-r.

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Page R178: Gary O. Zerbe, Philip G. Archer, Natalio Banchero, and Andrew J. Lechner. “On comparing regression lines with unequal slopes.” Page R179: first column, the paragraph after Equation 7 should read Case II. If A < 0 and D > 0, then the tests will be significant for X's satisfying (See PDF)
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21

PHILIPPI, PAULO CESAR, LUIZ ADOLFO HEGELE, RODRIGO SURMAS, DIOGO NARDELLI SIEBERT, and LUÍS ORLANDO EMERICH DOS SANTOS. "FROM THE BOLTZMANN TO THE LATTICE-BOLTZMANN EQUATION: BEYOND BGK COLLISION MODELS." International Journal of Modern Physics C 18, no. 04 (2007): 556–65. http://dx.doi.org/10.1142/s0129183107010796.

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In this work, we present a derivation for the lattice-Boltzmann equation directly from the linearized Boltzmann equation, combining the following main features: multiple relaxation times and thermodynamic consistency in the description of non isothermal compressible flows. The method presented here is based on the discretization of increasingly order kinetic models of the Boltzmann equation. Following a Gross-Jackson procedure, the linearized collision term is developed in Hermite polynomial tensors and the resulting infinite series is diagonalized after a chosen integer N, establishing the or
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22

Xing, Weimin, Peiling Yang, Chang Ao, Shumei Ren, and Yao Xu. "Mathematical Model of Ammonium Nitrogen Transport to Runoff with Different Slope Gradients under Simulated Rainfall." Water 11, no. 4 (2019): 675. http://dx.doi.org/10.3390/w11040675.

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The removal of nutrients by overland flow remains a major source of non-point pollution in agricultural land. In this study, a mathematical model of ammonium nitrogen transport from soil solution to overland flow was established. The model treated the mass transfer coefficient (km) as a time-dependent parameter, which was not a constant value as in previous studies, and it was evaluated with a four-slope gradient and three rainfall intensities. The kinematic-wave equation for overland flow was solved by an approximately semi-analytical solution based on Philip’s infiltration model, while the d
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23

Hamzah, Hamzah, and Moh Toifur. "ANALISIS KETAHANAN PRODUK SOLAR CELL BERBANTUAN SOFTWARE LOGGER PRO." ORBITA: Jurnal Kajian, Inovasi dan Aplikasi Pendidikan Fisika 5, no. 2 (2019): 73. http://dx.doi.org/10.31764/orbita.v5i2.1191.

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ABSTRAKPenelitian ini bertujuan untuk menentukan kualitas solar cell pada nilai fill factor (ff) dan efisiensinya ( ). Data tegangan Vi dan Ii diambil secara otomatis menggunakan software logger pro dan menggunakan analisis persamaan eksponensial . Data diambil dari solar cell merk polikristal type (99×69) mm2 yang dipaparkan di depan sumber cahaya lampu bohlam philips 100W/220V sejauh 18 cm pada Ir sebesar 983, 344 W/m2. Nilai Pmax terbesar besar berada pada sudut kemiringan 30o sebesar 0,0231 watt. ff yaitu 67%, efisiensi 22%. Pada sudut 30o tersebut arah cahaya datang tegak lurus dengan bid
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24

Tong, Bing, Thomas J. Sauer, Zhiqiu Gao, Xinhua Xiao, and Robert Horton. "Improving Soil Heat Flux Accuracy with the Philip Correction Technique." Journal of Hydrometeorology 20, no. 7 (2019): 1435–48. http://dx.doi.org/10.1175/jhm-d-18-0243.1.

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Abstract Soil heat flux Gs is an important component of the surface energy balance. Soil heat flux plates (SHFPs) are widely used to measure Gs, although several errors are known to occur. The Philip correction has been applied to minimize errors in Gs measured by SHFPs (Gp) if the soil thermal conductivity λs, SHFP thermal conductivity λp, and plate geometry function H are known. The objective of this study is to evaluate the effectiveness of the Philip correction for a variety of SHFPs. The λp were determined without thermal contact resistance and differed from the manufacturer-specified λp.
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25

Joachimiak, Magda. "Choice of the regularization parameter for the Cauchy problem for the Laplace equation." International Journal of Numerical Methods for Heat & Fluid Flow 30, no. 10 (2020): 4475–92. http://dx.doi.org/10.1108/hff-10-2019-0730.

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Purpose In this paper, the Cauchy-type problem for the Laplace equation was solved in the rectangular domain with the use of the Chebyshev polynomials. The purpose of this paper is to present an optimal choice of the regularization parameter for the inverse problem, which allows determining the stable distribution of temperature on one of the boundaries of the rectangle domain with the required accuracy. Design/methodology/approach The Cauchy-type problem is ill-posed numerically, therefore, it has been regularized with the use of the modified Tikhonov and Tikhonov–Philips regularization. The
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26

KAO, PAN-FU, HSUN-NAN KUO, SHIH-JYUN LIU, DA-MING YEH, and LUNG-KWANG PAN. "BIOKINETIC AND DOSIMETRIC ASSESSMENT OF FLUORINE 18 IN HEALTHY VOLUNTEERS SUBJECTED TO 18F–NaF PET/CT BONE SCANS VIA COMPARTMENTAL/MATLAB MODELS AND IN-VIVO STUDY." Journal of Mechanics in Medicine and Biology 18, no. 08 (2018): 1840022. http://dx.doi.org/10.1142/s0219519418400225.

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Objective: This study quantified the time-dependent concentration of [Formula: see text]F–NaF in critical organs according to a simplified compartmental biokinetic model with clinical verification. Methods: The eleven volunteers were given [Formula: see text][Formula: see text]MBq [Formula: see text]F–NaF administration, then scanned (with 15[Formula: see text]min-collection, every 20[Formula: see text]min, for 200 consecutive min) with a Philips Gemini GXL PET/CT. The empirical data were collected and normalized as the input dataset for MATLAB program. A six-compartmental model was created as
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27

McCartney, M. R. "Electron Holographic Imaging of Magnetic Materials at Nanometer Scale Resolution." Microscopy and Microanalysis 3, S2 (1997): 519–20. http://dx.doi.org/10.1017/s143192760000948x.

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Traditional electron microscopy techniques for imaging magnetic microstructure include out-of-focus Fresnel or Lorentz imaging, Foucault imaging and differential phase contrast (DPC). Off-axis electron holography provides access to both the amplitude and phase of the electron wave which has passed through the sample and therefore can provide direct, quantitative information about the in-plane component of the magnetic induction. The Philips CM200-FEG microscope which was used for the holography described here is equipped with a powerful mini-lens below the specimen enabling 2nm spatial resolut
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28

Yacoubi, Samir, Adel Slatni, and Khemaies Zayani. "Analysis of Saturation Risk in Sprinkler Irrigation: Case of Cherfech Irrigation Perimeter in Tunisia." Journal of Agricultural Science 10, no. 2 (2018): 130. http://dx.doi.org/10.5539/jas.v10n2p130.

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This study is targeted to the assessment of the saturation risk in sprinkler irrigation. For this purpose, in situ field trials were carried out to infer the saturated hydraulic conductivity (Ks) and sorptivity (S) using the disc infiltrometer method. Since the measured values of Ks are very close to prescribed application rate, caution is required. In a first step, the pressure head at the wetting front (hf) and the useful porosity (θs – θi) are assumed to be constant. Thus, the logarithmic derivation of the sorptivity provides a relation between relative variations of S and Ks. The ponding t
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29

Philippi, Paulo C., Keijo K. Mattila, Diogo N. Siebert, Luís O. E. dos Santos, Luiz A. Hegele Júnior, and Rodrigo Surmas. "Lattice-Boltzmann equations for describing segregation in non-ideal mixtures." Journal of Fluid Mechanics 713 (October 26, 2012): 564–87. http://dx.doi.org/10.1017/jfm.2012.473.

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AbstractIn fluid mechanics, multicomponent fluid systems are generally treated either as homogeneous solutions or as completely immiscible parts of a multiphasic system. In immiscible systems, the main task in numerical simulations is to find the location of the interface evolving over time, driven by normal and tangential surface forces. The lattice-Boltzmann method (LBM), on the other hand, is based on a mesoscopic description of the multicomponent fluid systems, and appears to be a promising framework that can lead to realistic predictions of segregation in non-ideal mixtures of partially m
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30

Tsai, Sung-Yi, Hsien-Chun Tseng, Zhipeng Ruan, et al. "Extra radiation dose of lungs in male examinees during cardiac computed tomography." Nuclear Technology and Radiation Protection 32, no. 4 (2017): 350–57. http://dx.doi.org/10.2298/ntrp1704350t.

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The use of multi-detector row computed tomography in cardiac examinations is increasing globally. Several hospitals are yet to establish a practical method for evaluating the extra scattering dose in the lungs (Dlung) of male examinees with different body-weights undergoing cardiac computed tomography. To measure the dose in each slice of a lung (Dlung,i), thermoluminescent dosimeters are inserted into Rando and tissue-equivalent phantoms made of polymethylmethacrylate and derived from ICRU 48 with masses from 10 to 90 kg. Dlung was evaluated by weighing the scanned volume of each slice. A pra
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Wang, Y. C., T. M. Chou, and M. Libera. "Electron Refraction of Amorphous Nanospheres." Microscopy and Microanalysis 3, S2 (1997): 1055–56. http://dx.doi.org/10.1017/s1431927600012162.

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The phase shift imparted to an incident high-energy electron wave in a TEM is related to the specimen’s electron-refractive properties. These, in turn, are related to the electrostatic potential and, by Fourier transform (1), to the electron scattering factors fei(s) for the various atom species i in the specimen and scattering vectors s. The average refractive index is determined by the mean electrostatic (inner) potential, Φo, and can be modelled as Φo = (C/Ω) Σfei(s0) [equation 1] where C = 47.878 (V-Å2) and the summation runs over all of the atoms in the unit volume Ω (2). Calculated fei(s
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32

Xin, Yan, Yun Xie, and Yuxin Liu. "Effects of Residue Cover on Infiltration Process of the Black Soil Under Rainfall Simulations." Water 11, no. 12 (2019): 2593. http://dx.doi.org/10.3390/w11122593.

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Residue cover is widely used for soil conservation after crop harvesting in the black soil region of the Northeastern China, which influences infiltration. It is necessary to optimize infiltration models for accurate predictions under bare and residue cover slope conditions. Rainfall simulation experiments were conducted to quantify the infiltration for the black soil under four rainfall intensities (30, 60, 90, and 120 mm/h), five residue coverage controls (15%, 35%, 55%, 75%, and bare slope), and two soil moisture (8% and approximately 30%) conditions. The observed data were used to fit and
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33

Hakim, Lukmanul, Nanis Susanti, and Ujianto. "Influence of Customer Relationship Management, Brand Equity, Perceived Product Quality, Perceived Price on Customer Value and Purchase Intention (Studies Philips Light Bulb in Batam)." International Journal of Economics and Finance 9, no. 7 (2017): 122. http://dx.doi.org/10.5539/ijef.v9n7p122.

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This study tried to determine and analyze the deeper understanding of the influence of customer relationship management, brand equity, perceived of product quality, perceived value and price to the customer at the customer's purchase intention Philips light bulb in Batam.The population in this study are all users (consumers) electric light bulb philips brands in the city of Batam. Testing of the model in this study, with Generalized Least Square Estimation (GLS), analysis of structural equation modeling (SEM), proportional random sampling method and software assistance Amos 22, on 240 responde
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34

Ho, Ruoya, Lijie Zhao, Yun-Yu Wang, Zhifeng Shao, and Andrew P. Somlyo. "Thickness measurements by Electron Energy Loss Spectroscopy (EELS)." Proceedings, annual meeting, Electron Microscopy Society of America 51 (August 1, 1993): 434–35. http://dx.doi.org/10.1017/s0424820100148009.

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An estimate of specimen mass-thickness is an essential requirement for evaluate with EELS the absolute elemental concentration in biological specimens. The conventional method used for measuring specimen thickness by EELS is: where t is the specimen thickness, λi is the total inelastic mean free path, It is the total count in an EELS spectrum and I0 is the count in the zero loss peak. This equation is rigorously correct, only if the electrons are collected over all scattering angles and the spectrum covers all energy losses. But in most experiments with a finite energy loss region, because of
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35

Teng, Shiang-Yu, and Sheng-Jye Hwang. "Simulations of Process-Induced Warpage During IC Encapsulation Process." Journal of Electronic Packaging 129, no. 3 (2006): 307–15. http://dx.doi.org/10.1115/1.2753936.

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Warpage during integrated circuit encapsulation process is a serious problem. Previous researchers had focused on warpage analysis with thermal-induced shrinkage and the cure-induced shrinkage was neglected. A new approach considering both cure- and thermal-induced shrinkage during encapsulation process was presented to predict the amount of warpage. The cure-induced shrinkage was described by the pressure-volume-temperature-cure (P-V-T-C) equation of epoxy. The thermal-induced shrinkage was described by the coefficients of thermal expansion of the component materials. The thin small outline p
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36

Joachimiak, Magda, Michał Ciałkowski, and Andrzej Frąckowiak. "Stable method for solving the Cauchy problem with the use of Chebyshev polynomials." International Journal of Numerical Methods for Heat & Fluid Flow 30, no. 3 (2019): 1441–56. http://dx.doi.org/10.1108/hff-05-2019-0416.

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Purpose The purpose of this paper is to present the method for solving the inverse Cauchy-type problem for the Laplace’s equation. Calculations were made for the rectangular domain with the target temperature on three boundaries and, additionally, on one of the boundaries, the heat flux distribution was selected. The purpose of consideration was to determine the distribution of temperature on a section of the boundary of the investigated domain (boundary Γ1) and find proper method for the problem regularization. Design/methodology/approach The solution of the direct and the inverse (Cauchy-typ
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37

Debasish, Sathya Swaroop. "Analysis of Long-Term Relationship between Spot and Futures prices Using Johansen’s Test of Cointegration." Information Management and Business Review 2, no. 2 (2011): 65–80. http://dx.doi.org/10.22610/imbr.v2i2.884.

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The main objective of the study is to examine the long-term relationship between spot prices and futures prices A. The study has used daily prices (closing, opening, high and low) in both spot market and futures market for the 40 sample individual stocks drawn from six leading sectors namely, Automobiles, Banking, Cement, Gas, Oil & Refineries, Information Technology and Pharmaceutical. The period of study is from 1st January 1997 to 31st May 2009. The study begins by testing the stationarity of the spot price series and futures price series using two econometric methods namely, Philips Pe
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Huang, F., S. L. Patel, D. Combs, and S. Parthasarathy. "0656 Mortality and Hospitalization in Patients With Heart Failure and Sleep Apnea: A Retrospective Study of Positive Airway Pressure Therapy in Medicare Beneficiaries." Sleep 43, Supplement_1 (2020): A250—A251. http://dx.doi.org/10.1093/sleep/zsaa056.652.

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Abstract Introduction Sleep apnea is common in patients with heart failure (HF) and can be treated with positive airway pressure (PAP) therapy. In patients with both HF and sleep apnea, whether treatment of PAP therapy is associated with reduction in hospitalization or mortality is unclear. Methods We used 5% Medicare limited-dataset (LDS) from 2013-2015 to perform a retrospective study of hospitalizations and mortality in HF patients with sleep apnea who received or did not receive PAP therapy over an 18-month time period. All-cause mortality during post-treatment period, any and HF-related h
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Rosser, Gervase, Mark Jenner, and Bill Luckin. "Review of periodical articles." Urban History 27, no. 1 (2000): 110–35. http://dx.doi.org/10.1017/s0963926800000171.

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One of the attractions of medieval urban history is the fact that major conceptual problems in the field continue to be debated. In a stimulating review article by J.H. Mundy, ’Philip Jones and the medieval Italian city-state‘, J. of European Economic History, 28 (1999), 185–200, one distinguished scholar is taxed for holding views now dismissed by some, but of which he is by no means a unique surviving representative. One of these views assumes a clear distinction between the antique city, supposedly a bureaucratic centre with limited economic functions, and the medieval city, as the home of
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ZHANG, DAWEI, LIU ZE YU, PHILIP LIN HUANG, SYLVIA LEE-HUANG, and JOHN Z. H. ZHANG. "COMPUTATIONAL DESIGN OF NORBORNANE-BASED HIV-1 PROTEASE INHIBITORS." Journal of Theoretical and Computational Chemistry 09, no. 02 (2010): 471–85. http://dx.doi.org/10.1142/s0219633610005773.

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A series of norbornane-based HIV-1 protease (PR) inhibitors are designed theoretically to displace the tetrahedrally coordinated internal water molecule that bridges inhibitor to flaps via hydrogen bonds. These designed inhibitors use the norbornenone oxygen atom to mimic this structural water molecule and contain diols to interact with the carboxylate oxygens of catalytic aspartates. The binding free energies were estimated by modified linear interaction energy approach [Zoete H, Michielin O, Karplus M, J Comput Aided Mol Des17:861, 2003], in which the binding free energy is written as a line
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Mardare, Cristinel, and Tong Yang. "Partial Differential Equations and Continuum Mechanics: a Collection of Papers Dedicated to Professor Philippe G. Ciarlet on the Occasion of His 80th Birthday." Acta Mathematicae Applicatae Sinica, English Series 35, no. 1 (2019): 1–2. http://dx.doi.org/10.1007/s10255-019-0807-9.

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42

Vu, Hong Thai, and Evangelos Tsotsas. "Mass and Heat Transport Models for Analysis of the Drying Process in Porous Media: A Review and Numerical Implementation." International Journal of Chemical Engineering 2018 (2018): 1–13. http://dx.doi.org/10.1155/2018/9456418.

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The modeling and numerical simulation of drying in porous media is discussed in this work by revisiting the different models of moisture migration during the drying process of porous media as well as their restrictions and applications. Among the models and theories, we consider those are ranging from simple ones like the diffusion theory to more complex ones like the receding front theory, the model of Philip and de Vries, Luikov’s theory, Krischer’s theory, and finally Whitaker’s model, in which all mass, heat transport, and phase change (evaporation) are taken into account. The review of dr
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Leão, Tairone Paiva, and Edmund Perfect. "Modeling water movement in horizontal columns using fractal theory." Revista Brasileira de Ciência do Solo 34, no. 4 (2010): 1463–68. http://dx.doi.org/10.1590/s0100-06832010000400042.

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Fractal mathematics has been used to characterize water and solute transport in porous media and also to characterize and simulate porous media properties. The objective of this study was to evaluate the correlation between the soil infiltration parameters sorptivity (S) and time exponent (n) and the parameters dimension (D) and the Hurst exponent (H). For this purpose, ten horizontal columns with pure (either clay or loam) and heterogeneous porous media (clay and loam distributed in layers in the column) were simulated following the distribution of a deterministic Cantor Bar with fractal dime
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Leung, Man Chun. "Blow-up solutions of nonlinear elliptic equations in ? n with critical exponent Dedicated to Philippe Dufour, whose exquisite horology artwork ??Simplicity?? inspires so much." Mathematische Annalen 327, no. 4 (2003): 723–44. http://dx.doi.org/10.1007/s00208-003-0468-z.

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45

Tinet, A. J., A. Chanzy, I. Braud, D. Crevoisier, and F. Lafolie. "Development and evaluation of an efficient soil-atmosphere model (FHAVeT) based on the Ross fast solution of the Richards equation for bare soil conditions." Hydrology and Earth System Sciences 19, no. 2 (2015): 969–80. http://dx.doi.org/10.5194/hess-19-969-2015.

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Abstract. In agricultural management, a good timing in operations, such as irrigation or sowing, is essential to enhance both economical and environmental performance. To improve such timing, predictive software are of particular interest. Optimal decision-software would require process modules which provide robust, efficient and accurate predictions while being based on a minimal amount of parameters easily available. The objective of this study is to assess the accuracy of a physically based model with high efficiency. To this aim, this paper develops a coupled model with climatic forcing ba
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BANDERIER, CYRIL, and MICHAEL DRMOTA. "Formulae and Asymptotics for Coefficients of Algebraic Functions." Combinatorics, Probability and Computing 24, no. 1 (2014): 1–53. http://dx.doi.org/10.1017/s0963548314000728.

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We study the coefficients of algebraic functions ∑n≥0fnzn. First, we recall the too-little-known fact that these coefficientsfnalways admit a closed form. Then we study their asymptotics, known to be of the typefn~CAnnα. When the function is a power series associated to a context-free grammar, we solve a folklore conjecture: the critical exponents α cannot be 1/3 or −5/2; they in fact belong to a proper subset of the dyadic numbers. We initiate the study of the set of possible values forA. We extend what Philippe Flajolet called the Drmota–Lalley–Woods theorem (which states that α=−3/2 when th
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Kameníčková, Ivana, L. Larišová, and A. Stoklásková. "The impact of different tillage treatments on hydraulic conductivity of loamy soil." Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis 60, no. 5 (2012): 109–14. http://dx.doi.org/10.11118/actaun201260050109.

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Water infiltration into the soil profile, surface runoff and soil erosion in arable lands depend on the conditions of the top layer. The tillage treatment of the top layer plays a key role in changes of the hydro-physical properties, mainly saturated hydraulic conductivity Ks of the surface layer. The aim of this study was to asses the impact of different tillage treatments on hydraulic conductivity in the locality Bohaté Málkovice. Field experimental works in this area were performed in 2009 and were repeted in 2011 on Haplic Chernozem, medium heavy loamy soil. The experimental area was divid
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Chandio, Abbas Ali, Yuansheng Jiang, and Abdul Rehman. "Energy consumption and agricultural economic growth in Pakistan: is there a nexus?" International Journal of Energy Sector Management 13, no. 3 (2019): 597–609. http://dx.doi.org/10.1108/ijesm-08-2018-0009.

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Purpose This study aims to empirically examine the relationship between energy consumption and agricultural economic growth in Pakistan over the period from 1984 to 2016. Design/methodology/approach This study used the autoregressive distributed lag (ARDL) bounds testing approach to cointegration to investigate the long-run and short-run determinants of agricultural economic growth in Pakistan. Findings The results of the ARDL bounds testing approach to cointegration revealed that long-run linkage exists among the study variables. The findings of this paper showed that agricultural economic gr
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Ovcharenko, E. A., K. Yu Klyshnikov, I. N. Sizova, N. V. Kondyukova, and L. S. Barbarash. "Numerical assessment of the anatomy of the annulus fibrosus of the mitral valve in health and disease as per three-dimensional echocardiography." Patologiya krovoobrashcheniya i kardiokhirurgiya 25, no. 2 (2021): 50. http://dx.doi.org/10.21688/1681-3472-2021-2-50-59.

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<p><strong>Aim.</strong> We analysed the geometry and dynamics of the annulus fibrosus of the mitral valve in normal conditions, with mitral regurgitation of degenerative and ischaemic aetiology based on three-dimensional echocardiography with subsequent mathematical processing.</p><p><strong>Methods.</strong> We included the data of transesophageal three-dimensional echocardiography of 50 patients in the following three groups: 10 patients with degenerative regurgitation, 10 patients with ischaemic mitral regurgitation and 30 patients in the ‘normal’
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Webster, James. "Haydn’s sensibility." Studia Musicologica 51, no. 1-2 (2010): 13–27. http://dx.doi.org/10.1556/smus.51.2010.1-2.2.

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Recent interpretations of both Haydn’s personality (as a man) and his musical style (or ‘persona’) have focused on the two opposed categories earnestness and wit . The present essay adds a third category on both sides of the equation: sensibility (German Empfindsamkeit ), and argues that it is equally important. The various meanings of sensibility are laid out and their applicability to Haydn discussed, including his rich and varied relationships with lovers and intimate friends. The problematics of the possible correlations between an artist’s personality and his style are discussed; it is ar
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