Search results

Items from 101 to 120 out of 16,969,279 results

1 ...
3
4
5
6
7
8
9

article

Implementation of Discontinuous Skeletal methods on arbitrary-dimensional, polytopal meshes using generic programming

M. Cicuttin, D.A. Di Pietro, A. Ern

Journal of Computational and Applied Mathematics > 2018 > 344 > C > 852-874

Discontinuous Skeletal methods approximate the solution of boundary-value problems by attaching discrete unknowns to mesh faces (hence the term skeletal) while allowing these discrete unknowns to be chosen independently on each mesh face (hence the term discontinuous). Cell-based unknowns, which can be eliminated locally by a Schur complement technique (also known as static condensation), are also...

article

PyFly: A fast, portable aerodynamics simulator

D. Garcia, M. Ghommem, N. Collier, B.O.N. Varga, more

Journal of Computational and Applied Mathematics > 2018 > 344 > C > 875-903

We present a fast, user-friendly implementation of a potential flow solver based on the unsteady vortex lattice method (UVLM), namely PyFly. UVLM computes the aerodynamic loads applied on lifting surfaces while capturing the unsteady effects such as the added mass forces, the growth of bound circulation, and the wake while assuming that the flow separation location is known a priori. This method is...

article

Alteration of organic matter during remediation of acid sulfate soils

Angelika Kölbl, Petra Marschner, Luke Mosley, Rob Fitzpatrick, more

Geoderma > 2018 > 332 > C > 121-134

When acid sulfate soils with hypersulfidic material dry, oxidation of pyrite can cause strong acidification due to formation of sulfuric (pH < 4) material. Re-saturation of acid sulfate soils containing sulfuric material can lead to re-formation of pyrite and pH increase through activity of sulfate reducing bacteria, which require available organic carbon (OC). In the Lower River Murray region...

article

Solvability and optimal controls of impulsive Hilfer fractional delay evolution inclusions with Clarke subdifferential

Aicha Harrat, Juan J. Nieto, Amar Debbouche

Journal of Computational and Applied Mathematics > 2018 > 344 > C > 725-737

We study the solvability and optimal controls of an impulsive nonlinear Hilfer fractional delay evolution inclusion in Banach spaces. For the main results, we use fractional calculus, fixed point technique, semigroup theory and multivalued analysis. We introduce the notion of Clarke delay subdifferential. To continue and extend previous works in the field, we prove an existence result of optimal control...

article

A geostatistical Vis-NIR spectroscopy index to assess the incipient soil salinization in the Neretva River valley, Croatia

Monika Zovko, Davor Romić, Claudio Colombo, Erika Di Iorio, more

Geoderma > 2018 > 332 > C > 60-72

Soil spectroscopy can provide low-cost and high-density data for predicting various soil properties. However, a relatively weak correlation between the spectra and the measurements of salinized soil makes spectroscopy difficult to use in predicting areas at risk of salinization, especially for low and moderately saline soils. The main objective of the study was to propose an effective approach based...

article

An energy-stable generalized- α method for the Swift–Hohenberg equation

A.F. Sarmiento, L.F.R. Espath, P. Vignal, L. Dalcin, more

Journal of Computational and Applied Mathematics > 2018 > 344 > C > 836-851

We propose a second-order accurate energy-stable time-integration method that controls the evolution of numerical instabilities introducing numerical dissipation in the highest-resolved frequencies. Our algorithm further extends the generalized- α method and provides control over dissipation via the spectral radius. We derive the first and second laws of thermodynamics for the Swift–Hohenberg equation...

article

Splitting schemes for the stress formulation of the incompressible Navier–Stokes equations

Peter Minev, Petr N. Vabishchevich

Journal of Computational and Applied Mathematics > 2018 > 344 > C > 807-818

This paper presents a novel approach to the Navier–Stokes equations which reformulates them in terms of a new tensor variable. In the first formulation discussed in the paper this variable is proportional to the gradient of the velocity field with the pressure added to the diagonal components. In the second formulation it is identical to the stress tensor. At first glance the resulting tensorial problem...

article

Optimal hedging strategies in equity-linked products

Mihael Perman, Ana Zalokar

Journal of Computational and Applied Mathematics > 2018 > 344 > C > 601-607

Equity-linked insurance policies are one of the most widespread insurance products. In many cases such contracts have guarantees like a minimum return over the lifetime of the policy. Liabilities arising from such guarantees must be hedged by suitable investments. There are restrictions on hedging strategies in many jurisdictions but with the more flexible regulatory framework of Solvency 2 there...

article

Numerical analysis of in-situ biodegradation model in porous media

Abdellatif Agouzal, Karam Allali, Siham Binna

Journal of Computational and Applied Mathematics > 2018 > 344 > C > 190-228

In this paper a numerical analysis of in situ-biorestoration is presented. Improved stability and error estimates are derived for a P 1 finite-element method applied to coupled system of non linear partial differential equations modeling flow in porous media. These results improve upon previously derived stability and error estimates in two respects: first, a stability of the approximate solution...

article

A norm descent derivative-free algorithm for solving large-scale nonlinear symmetric equations

J.K. Liu, Y.M. Feng

Journal of Computational and Applied Mathematics > 2018 > 344 > C > 89-99

In this paper, we propose a norm descent derivative-free algorithm for solving large-scale nonlinear symmetric equations without involving any information of the gradient or Jacobian matrix by using some approximate substitutions. The proposed algorithm is extended from an efficient three-term conjugate gradient method for solving unconstrained optimization problems, and inherits some nice properties...

article

Structural effects of participation propensity in online collective actions: Based on big data and Delphi methods

Peng Lu

Journal of Computational and Applied Mathematics > 2018 > 344 > C > 288-300

The probability or propensity of participation or Internet users (individuals) shapes the evolutionary dynamics and final outcomes of online collective actions. This paper investigates the structural factors and the aggregate kernel that may influence or determine the propensity of participation for cyber collective actions. For structural factors such as Interest (I), Rule (R), and Moral (M), a structural...

article

Robust optimal investment and reinsurance problem for the product of the insurer’s and the reinsurer’s utilities

Ya Huang, Yao Ouyang, Lingxiao Tang, Jieming Zhou

Journal of Computational and Applied Mathematics > 2018 > 344 > C > 532-552

In this paper, we study a robust optimal reinsurance–investment problem for a general insurance company which holds shares of an insurance company and a reinsurance company. Assume that the claim process described by a Brownian motion with drift, the insurer can purchase proportional reinsurance, and both the insurer and the reinsurer can invest in a risk-free asset and a risky asset. Besides, the...

article

Co-effects of salinity and moisture on CO2 and N2O emissions of laboratory-incubated salt-affected soils from different vegetation types

Lihua Zhang, Luping Song, Bingchen Wang, Hongbo Shao, more

Geoderma > 2018 > 332 > C > 109-120

The temporal variation of precipitation and relevant salinity fluctuation can significantly affect greenhouse gas (GHG) emissions of salt-affected soils in the Yellow River Delta (YRD) of China. The current study aims to investigate the effects of salinity and moisture on CO₂ and N₂O emissions of saline soils. Soils collected from different vegetation communities were incubated in glass Mason jars...

article

The evaluation of geometric Asian power options under time changed mixed fractional Brownian motion

Foad Shokrollahi

Journal of Computational and Applied Mathematics > 2018 > 344 > C > 716-724

In this paper, the geometric Asian option pricing problem is investigated under the assumption that the underlying stock price is assumed following a mixed fractional subdiffusive Black–Scholes model, and the geometric average Asian option pricing formula is derived under this assumption. We then apply the results to value Asian power options on the stocks that pay constant dividends when the payoff...

article

Solving efficiently one dimensional parabolic singularly perturbed reaction–diffusion systems: A splitting by components

C. Clavero, J.C Jorge

Journal of Computational and Applied Mathematics > 2018 > 344 > C > 1-14

In this paper we consider 1D parabolic singularly perturbed systems of reaction–diffusion type which are coupled in the reaction term. The numerical scheme, used to approximate the exact solution, combines the fractional implicit Euler method and a splitting by components to discretize in time, and the classical central finite differences scheme to discretize in space. The use of the fractional Euler...

article

Condition numbers for a linear function of the solution of the linear least squares problem with equality constraints

Huai-An Diao

Journal of Computational and Applied Mathematics > 2018 > 344 > C > 640-656

In this paper, we consider the normwise, mixed and componentwise condition numbers for a linear function L x of the solution x to the linear least squares problem with equality constraints (LSE). The explicit expressions of the normwise, mixed and componentwise condition numbers are derived. Also, we revisit some previous results on the condition numbers of linear least squares problem (LS) and...

article

Gibbs–Wilbraham oscillation related to an Hermite interpolation problem on the unit circle

E. Berriochoa, A. Cachafeiro, J.M. García Amor

Journal of Computational and Applied Mathematics > 2018 > 344 > C > 657-675

The aim of this piece of work is to study some topics related to an Hermite interpolation problem on the unit circle. We consider as nodal points the zeros of the para-orthogonal polynomials with respect to a measure in the Baxter class and such that the sequence of the first derivative of the reciprocal of the orthogonal polynomials is uniformly bounded on the unit circle. We study the convergence...

article

The C E V model and its application to financial markets with volatility uncertainty

Weipeng Yuan, Shaoyong Lai

Journal of Computational and Applied Mathematics > 2018 > 344 > C > 25-36

We survey the financial markets whose risks are caused by uncertain volatilities. The financial markets focus on the assets which are effectively allocated in one risk-free asset and one risky asset, whose price process is governed by the constant elasticity of variance ( C E V for short) model which contains the G -Brownian motion rather than the classical Brownian motion. Such the C E V model...

article

Calculating the normalized Laplacian spectrum and the number of spanning trees of linear pentagonal chains

Chunlin He, Shuchao Li, Wenjun Luo, Liqun Sun

Journal of Computational and Applied Mathematics > 2018 > 344 > C > 381-393

Let W n be a linear pentagonal chain with 2 n pentagons. In this article, according to the decomposition theorem for the normalized Laplacian polynomial of W n , we obtain that the normalized Laplacian spectrum of W n consists of the eigenvalues of two special matrices: L A of order 3 n + 1 and L S of order 2 n + 1 . Together with the relationship between...

article

Editorial Board

Journal of Computational and Applied Mathematics > 2018 > 344 > C > ii

1 ...
3
4
5
6
7
8
9

Publication date

Last 3 months (107,999)
Last year (706,262)
Last 3 years (3,049,742)

Close

Date range setting

Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.

From:

To:
Set your own date range

Content availability

Available (15,337,247)
None (1,632,032)

Publication language

English (15,558,547)
Polish (967,103)
German (247,074)
French (153,545)
Dutch (71,481)
Russian (7,925)
Czech (7,399)
Undetermined (6,775)
Spanish (5,126)
Slovak (5,122)
Italian (4,730)
Ukrainian (4,195)
Portuguese (1,833)
Hungarian (1,424)
Chinese (348)
Serbo-Croatian (324)
Latvian, Lettish (279)
Lithuanian (245)
Estonian (239)
Byelorussian (215)
Bulgarian (122)
Serbian (79)
Macedonian (78)
Danish (73)
Slovenian (54)
Swedish (52)
Norwegian (49)
Latin (44)
No linguistic content (40)
Moldavian (32)
Esperanto (28)
Urdu (26)
Interlingue (22)
Singhalese (22)
Catalan (18)
Turkish (14)
Korean (13)
Greek (12)
Japanese (10)
English, Old (ca.450-1100) (9)
Basque (8)
Nepali (6)
Bosnian (3)
Sorbian languages (3)
Afar (2)
Aragonese (2)
Finnish (2)
Guarani (2)
Abkhazian (1)
Bashkir (1)
Irish (1)
Galician (1)
Hebrew (1)
Pali (1)
Vietnamese (1)
more

Keywords

APOPTOSIS (48,286)
OPTIMIZATION (38,101)
POLSKA (36,700)
MICROSTRUCTURE (35,944)
INFLAMMATION (35,796)
OXIDATIVE STRESS (33,962)
CHILDREN (33,466)
BREAST CANCER (31,633)
CANCER (31,230)
DEPRESSION (30,532)
ADSORPTION (30,264)
MECHANICAL PROPERTIES (29,080)
OBESITY (28,431)
SIMULATION (28,385)
STABILITY (27,907)
MATHEMATICAL MODEL (27,473)
EPIDEMIOLOGY (27,058)
NANOPARTICLES (25,997)
AGING (24,929)
STRESS (24,704)
CRYSTAL STRUCTURE (24,611)
RAT (24,095)
UPRAWA ROSLIN (22,818)
QUALITY OF LIFE (22,652)
CLIMATE CHANGE (22,633)
COPPER (22,543)
SILICON (22,364)
KINETICS (22,306)
GENE EXPRESSION (22,279)
TEMPERATURE (22,057)
PROGNOSIS (22,033)
MAGNETIC RESONANCE IMAGING (21,811)
MODELING (21,744)
X-RAY DIFFRACTION (21,329)
PREGNANCY (21,080)
DIABETES (20,144)
MORTALITY (19,653)
RELIABILITY (19,322)
SCHIZOPHRENIA (19,169)
TREATMENT (19,168)
DEVELOPMENT (19,094)
DIAGNOSIS (18,948)
OXIDATION (18,814)
MONITORING (18,540)
NITRIC OXIDE (18,485)
CHINA (18,017)
MORPHOLOGY (17,708)
SURGERY (17,470)
MRI (17,265)
KONFERENCJE (16,898)
ODMIANY ROSLIN (16,817)
SURVIVAL (16,737)
OCHRONA ROSLIN (16,673)
EDUCATION (16,622)
HIPPOCAMPUS (16,581)
IMMUNOHISTOCHEMISTRY (16,568)
SYNTHESIS (16,514)
ANXIETY (16,474)
(16,454)
THIN FILMS (16,333)
FLUORESCENCE (16,249)
GROWTH (16,202)
ULTRASOUND (16,135)
RISK FACTORS (15,887)
IRON (15,835)
UNCERTAINTY (15,790)
STROKE (15,738)
REHABILITATION (15,734)
LESNICTWO (15,524)
MODELLING (15,519)
META-ANALYSIS (15,513)
CHEMOTHERAPY (15,453)
DATA MINING (15,376)
CYTOKINES (15,120)
MASS SPECTROMETRY (15,075)
PAIN (15,005)
DIFFUSION (14,986)
GENDER (14,839)
PROSTATE CANCER (14,808)
RESISTANCE (14,699)
HYPERTENSION (14,374)
CLASSIFICATION (14,251)
MITOCHONDRIA (14,199)
ROSLINY OZDOBNE (14,150)
HIV (14,129)
PHOTOLUMINESCENCE (14,104)
NOISE (14,064)
STRUCTURE (13,984)
POLYMORPHISM (13,883)
SENSORS (13,796)
SWITCHES (13,776)
CYTOTOXICITY (13,774)
FINITE ELEMENT METHOD (13,708)
HEART FAILURE (13,679)
DEGRADATION (13,599)
COMPUTATIONAL MODELING (13,537)
EVOLUTION (13,439)
HODOWLA ZWIERZAT (13,430)
ATHEROSCLEROSIS (13,397)
POLAND (13,391)
more

Data set

Elsevier (9,437,523)
Springer (3,654,857)
Wiley (1,495,554)
ieee (692,423)
Agro (628,423)
BazTech (431,062)
ACS (330,595)
CEJSH (220,847)
PSJD (41,457)
DML (33,697)
Infona (2,841)
more

INFONA - science communication portal

Search results

Implementation of Discontinuous Skeletal methods on arbitrary-dimensional, polytopal meshes using generic programming

PyFly: A fast, portable aerodynamics simulator

Alteration of organic matter during remediation of acid sulfate soils

Solvability and optimal controls of impulsive Hilfer fractional delay evolution inclusions with Clarke subdifferential

A geostatistical Vis-NIR spectroscopy index to assess the incipient soil salinization in the Neretva River valley, Croatia

An energy-stable generalized- α method for the Swift–Hohenberg equation

Splitting schemes for the stress formulation of the incompressible Navier–Stokes equations

Optimal hedging strategies in equity-linked products

Numerical analysis of in-situ biodegradation model in porous media

A norm descent derivative-free algorithm for solving large-scale nonlinear symmetric equations

Structural effects of participation propensity in online collective actions: Based on big data and Delphi methods

Robust optimal investment and reinsurance problem for the product of the insurer’s and the reinsurer’s utilities

Co-effects of salinity and moisture on CO2 and N2O emissions of laboratory-incubated salt-affected soils from different vegetation types

The evaluation of geometric Asian power options under time changed mixed fractional Brownian motion

Solving efficiently one dimensional parabolic singularly perturbed reaction–diffusion systems: A splitting by components

Condition numbers for a linear function of the solution of the linear least squares problem with equality constraints

Gibbs–Wilbraham oscillation related to an Hermite interpolation problem on the unit circle

The C E V model and its application to financial markets with volatility uncertainty

Calculating the normalized Laplacian spectrum and the number of spanning trees of linear pentagonal chains

Editorial Board

Filter options

Publication date

Content availability

Publication language

Keywords

Data set

INFONA - science communication portal

Search results

Add recipient

Sending message cancelled

Are you sure you want to cancel sending this message?

Send message

Filter options

Publication date

Date range setting

Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.

Content availability

Publication language

Keywords

Data set

Reporting an error / abuse

Sending the report failed

Accessibility options