In this paper, we introduced the modified differential transform which is a modified version of a two-dimensional differential transform method. First, the properties of the modified differential transform method (MDTM) are presented. After this, by using the idea modified differential transform method we will find an analytical-numerical solution of linear partial integro-differential equations (PIDE) with convolution kernel which occur naturally in various fields of science and engineering. In some cases, the exact solution may be achieved. The efficiency and reliability of this method are illustrated by some examples.
Isoparametric bilinear quadrilateral element _ ppt presentationFilipe Giesteira
The theoretical formulation of an isoparametric element, from the Lagrange family. In addition, the MATLAB code of the FEM from the bilinear element with four nodes was also implemented.
Assignment developed in the scope of the finite element method course, lectured at FEUP (Faculdade de Engenharia da Universidade do Porto).
The aim of this paper is to study the existence and approximation of periodic solutions for non-linear systems of integral equations, by using the numerical-analytic method which were introduced by Samoilenko[ 10, 11]. The study of such nonlinear integral equations is more general and leads us to improve and extend the results of Butris [2].
Numerical Solution Of Delay Differential Equations Using The Adomian Decompos...theijes
Adomian Decomposition Method has been applied to obtain approximate solution to a wide class of ordinary and partial differential equation problems arising from Physics, Chemistry, Biology and Engineering. In this paper, a numerical solution of delay differential Equations (DDE) based on the Adomian Decomposition Method (ADM) is presented. The solutions obtained were without discretization nor linearization. Example problems were solved for demonstration. Keywords: Adomian Decomposition, Delay Differential Equations (DDE), Functional Equations , Method of Characteristic.
Isoparametric bilinear quadrilateral element _ ppt presentationFilipe Giesteira
The theoretical formulation of an isoparametric element, from the Lagrange family. In addition, the MATLAB code of the FEM from the bilinear element with four nodes was also implemented.
Assignment developed in the scope of the finite element method course, lectured at FEUP (Faculdade de Engenharia da Universidade do Porto).
The aim of this paper is to study the existence and approximation of periodic solutions for non-linear systems of integral equations, by using the numerical-analytic method which were introduced by Samoilenko[ 10, 11]. The study of such nonlinear integral equations is more general and leads us to improve and extend the results of Butris [2].
Numerical Solution Of Delay Differential Equations Using The Adomian Decompos...theijes
Adomian Decomposition Method has been applied to obtain approximate solution to a wide class of ordinary and partial differential equation problems arising from Physics, Chemistry, Biology and Engineering. In this paper, a numerical solution of delay differential Equations (DDE) based on the Adomian Decomposition Method (ADM) is presented. The solutions obtained were without discretization nor linearization. Example problems were solved for demonstration. Keywords: Adomian Decomposition, Delay Differential Equations (DDE), Functional Equations , Method of Characteristic.
AGGREGATION OF OPINIONS FOR SYSTEM SELECTION USING APPROXIMATIONS OF FUZZY NU...mathsjournal
In this article we assume that experts express their view points by way of approximation of Triangular fuzzy numbers. We take the help of fuzzy set theory concept to model the situation and present a method to aggregate these approximations of triangular fuzzy numbers to obtain an overall approximation of triangular fuzzy number for each system and then linear ordering done before the best system is chosen. A comparison has been made between approximation of triangular fuzzy systems and the corresponding fuzzy triangular numbers systems. The notions like fuzziness and ambiguity for the approximation of triangular fuzzy numbers are also found.
AGGREGATION OF OPINIONS FOR SYSTEM SELECTION USING APPROXIMATIONS OF FUZZY NU...mathsjournal
In this article we assume that experts express their view points by way of approximation of Triangular
fuzzy numbers. We take the help of fuzzy set theory concept to model the situation and present a method to
aggregate these approximations of triangular fuzzy numbers to obtain an overall approximation of
triangular fuzzy number for each system and then linear ordering done before the best system is chosen. A
comparison has been made betweenapproximation of triangular fuzzy systems and the corresponding fuzzy
triangular numbers systems. The notions like fuzziness and ambiguity for the approximation of triangular
fuzzy numbers are also found.
AGGREGATION OF OPINIONS FOR SYSTEM SELECTION USING APPROXIMATIONS OF FUZZY NU...mathsjournal
In this article we assume that experts express their view points by way of approximation of Triangular
fuzzy numbers. We take the help of fuzzy set theory concept to model the situation and present a method to
aggregate these approximations of triangular fuzzy numbers to obtain an overall approximation of
triangular fuzzy number for each system and then linear ordering done before the best system is chosen. A
comparison has been made betweenapproximation of triangular fuzzy systems and the corresponding fuzzy
triangular numbers systems. The notions like fuzziness and ambiguity for the approximation of triangular
fuzzy numbers are also found.
We disclose a simple and straightforward method of solving ordinary or linear partial differential equations of any order and apply it to solve the generalized Euler-Tricomi equation. The method is easier than classical methods and also didactic.
Date: Jan, 10, 202
A Class of Polynomials Associated with Differential Operator and with a Gener...iosrjce
The object of this paper is to present several classes of linear and bilateral generating relations by
employing operational techniques, which reduces as a special case of (known or new) bilateral generating
relations.At last some of generating functions associated with stirling number of second kind are also discussed.
Toeplitz Hermitian Positive Definite (THPD) matrices play an important role in signal processing and computer graphics and circular models, related to angular / periodic data, have vide applications in various walks of life. Visualizing a circular model through THPD matrix the required computations on THPD matrices using single bordering and double bordering are discussed. It can be seen that every tridiagonal THPD leads to Cardioid model.
Stereographic Circular Normal Moment Distributionmathsjournal
Minh et al (2003) and Toshihiro Abe et al (2010) proposed a new method to derive circular distributions from the existing linear models by applying Inverse stereographic projection or equivalently bilinear transformation. In this paper, a new circular model, we call it as stereographic circular normal moment distribution, is derived by inducing modified inverse stereographic projection on normal moment distribution (Akin Olosunde et al (2008)) on real line. This distribution generalizes stereographic circular normal distribution (Toshihiro Abe et al (2010)), the density and distribution functions of proposed model admit closed form. We provide explicit expressions for trigonometric moments.
On solving fuzzy delay differential equationusing bezier curves IJECEIAES
In this article, we plan to use Bezier curves method to solve linear fuzzy delay differential equations. A Bezier curves method is presented and modified to solve fuzzy delay problems taking the advantages of the fuzzy set theory properties. The approximate solution with different degrees is compared to the exact solution to confirm that the linear fuzzy delay differential equations process is accurate and efficient. Numerical example is explained and analyzed involved first order linear fuzzy delay differential equations to demonstrate these proper features of this proposed problem.
We disclose a simple and straightforward method of solving single-order linear partial differential equations. The advantage of the method is that it is applicable to any orders and the big disadvantage is that it is restricted to a single order at a time. As it is very easy compared to classical methods, it has didactic value.
Periodic Function, Dirichlet's Condition, Fourier series, Even & Odd functions, Euler's Formula for Fourier Coefficients, Change of Interval, Fourier series in the intervals (0,2l), (-l,l) , (-pi, pi), (0, 2pi), Half Range Cosine & Sine series Root mean square, Complex Form of Fourier series, Parseval's Identity
optimal solution method of integro-differential equaitions under laplace tran...INFOGAIN PUBLICATION
In this paper, Laplace Transform method is developed to solve partial Integro-differential equations. Partial Integro-differential equations (PIDE) occur naturally in various fields of science. Engineering and Social Science. We propose a max general form of linear PIDE with a convolution Kernal. We convert the proposed PIDE to an ordinary differential equation (ODE) using the LT method. We applying inverse LT as exact solution of the problems obtained. It is observed that the LT is a simple and reliable technique for solving such equations. The proposed model illustrated by numerical examples.
A Non Local Boundary Value Problem with Integral Boundary ConditionIJMERJOURNAL
ABSTRACT: In this article a three point boundary value problem associated with a second order differential equation with integral type boundary conditions is proposed. Then its solution is developed with the help of the Green’s function associated with the homogeneous equation. Using this idea and Iteration method is proposed to solve the corresponding linear problem.
IOSR Journal of Mathematics(IOSR-JM) is an open access international journal that provides rapid publication (within a month) of articles in all areas of mathemetics and its applications. The journal welcomes publications of high quality papers on theoretical developments and practical applications in mathematics. Original research papers, state-of-the-art reviews, and high quality technical notes are invited for publications.
Some Common Fixed Point Results for Expansive Mappings in a Cone Metric SpaceIOSR Journals
The purpose of this work is to extend and generalize some common fixed point theorems for Expansive type mappings in complete cone metric spaces. We are attempting to generalize the several well- known recent results. Mathematical subject classification; 54H25, 47H10
AGGREGATION OF OPINIONS FOR SYSTEM SELECTION USING APPROXIMATIONS OF FUZZY NU...mathsjournal
In this article we assume that experts express their view points by way of approximation of Triangular fuzzy numbers. We take the help of fuzzy set theory concept to model the situation and present a method to aggregate these approximations of triangular fuzzy numbers to obtain an overall approximation of triangular fuzzy number for each system and then linear ordering done before the best system is chosen. A comparison has been made between approximation of triangular fuzzy systems and the corresponding fuzzy triangular numbers systems. The notions like fuzziness and ambiguity for the approximation of triangular fuzzy numbers are also found.
AGGREGATION OF OPINIONS FOR SYSTEM SELECTION USING APPROXIMATIONS OF FUZZY NU...mathsjournal
In this article we assume that experts express their view points by way of approximation of Triangular
fuzzy numbers. We take the help of fuzzy set theory concept to model the situation and present a method to
aggregate these approximations of triangular fuzzy numbers to obtain an overall approximation of
triangular fuzzy number for each system and then linear ordering done before the best system is chosen. A
comparison has been made betweenapproximation of triangular fuzzy systems and the corresponding fuzzy
triangular numbers systems. The notions like fuzziness and ambiguity for the approximation of triangular
fuzzy numbers are also found.
AGGREGATION OF OPINIONS FOR SYSTEM SELECTION USING APPROXIMATIONS OF FUZZY NU...mathsjournal
In this article we assume that experts express their view points by way of approximation of Triangular
fuzzy numbers. We take the help of fuzzy set theory concept to model the situation and present a method to
aggregate these approximations of triangular fuzzy numbers to obtain an overall approximation of
triangular fuzzy number for each system and then linear ordering done before the best system is chosen. A
comparison has been made betweenapproximation of triangular fuzzy systems and the corresponding fuzzy
triangular numbers systems. The notions like fuzziness and ambiguity for the approximation of triangular
fuzzy numbers are also found.
We disclose a simple and straightforward method of solving ordinary or linear partial differential equations of any order and apply it to solve the generalized Euler-Tricomi equation. The method is easier than classical methods and also didactic.
Date: Jan, 10, 202
A Class of Polynomials Associated with Differential Operator and with a Gener...iosrjce
The object of this paper is to present several classes of linear and bilateral generating relations by
employing operational techniques, which reduces as a special case of (known or new) bilateral generating
relations.At last some of generating functions associated with stirling number of second kind are also discussed.
Toeplitz Hermitian Positive Definite (THPD) matrices play an important role in signal processing and computer graphics and circular models, related to angular / periodic data, have vide applications in various walks of life. Visualizing a circular model through THPD matrix the required computations on THPD matrices using single bordering and double bordering are discussed. It can be seen that every tridiagonal THPD leads to Cardioid model.
Stereographic Circular Normal Moment Distributionmathsjournal
Minh et al (2003) and Toshihiro Abe et al (2010) proposed a new method to derive circular distributions from the existing linear models by applying Inverse stereographic projection or equivalently bilinear transformation. In this paper, a new circular model, we call it as stereographic circular normal moment distribution, is derived by inducing modified inverse stereographic projection on normal moment distribution (Akin Olosunde et al (2008)) on real line. This distribution generalizes stereographic circular normal distribution (Toshihiro Abe et al (2010)), the density and distribution functions of proposed model admit closed form. We provide explicit expressions for trigonometric moments.
On solving fuzzy delay differential equationusing bezier curves IJECEIAES
In this article, we plan to use Bezier curves method to solve linear fuzzy delay differential equations. A Bezier curves method is presented and modified to solve fuzzy delay problems taking the advantages of the fuzzy set theory properties. The approximate solution with different degrees is compared to the exact solution to confirm that the linear fuzzy delay differential equations process is accurate and efficient. Numerical example is explained and analyzed involved first order linear fuzzy delay differential equations to demonstrate these proper features of this proposed problem.
We disclose a simple and straightforward method of solving single-order linear partial differential equations. The advantage of the method is that it is applicable to any orders and the big disadvantage is that it is restricted to a single order at a time. As it is very easy compared to classical methods, it has didactic value.
Periodic Function, Dirichlet's Condition, Fourier series, Even & Odd functions, Euler's Formula for Fourier Coefficients, Change of Interval, Fourier series in the intervals (0,2l), (-l,l) , (-pi, pi), (0, 2pi), Half Range Cosine & Sine series Root mean square, Complex Form of Fourier series, Parseval's Identity
optimal solution method of integro-differential equaitions under laplace tran...INFOGAIN PUBLICATION
In this paper, Laplace Transform method is developed to solve partial Integro-differential equations. Partial Integro-differential equations (PIDE) occur naturally in various fields of science. Engineering and Social Science. We propose a max general form of linear PIDE with a convolution Kernal. We convert the proposed PIDE to an ordinary differential equation (ODE) using the LT method. We applying inverse LT as exact solution of the problems obtained. It is observed that the LT is a simple and reliable technique for solving such equations. The proposed model illustrated by numerical examples.
A Non Local Boundary Value Problem with Integral Boundary ConditionIJMERJOURNAL
ABSTRACT: In this article a three point boundary value problem associated with a second order differential equation with integral type boundary conditions is proposed. Then its solution is developed with the help of the Green’s function associated with the homogeneous equation. Using this idea and Iteration method is proposed to solve the corresponding linear problem.
IOSR Journal of Mathematics(IOSR-JM) is an open access international journal that provides rapid publication (within a month) of articles in all areas of mathemetics and its applications. The journal welcomes publications of high quality papers on theoretical developments and practical applications in mathematics. Original research papers, state-of-the-art reviews, and high quality technical notes are invited for publications.
Some Common Fixed Point Results for Expansive Mappings in a Cone Metric SpaceIOSR Journals
The purpose of this work is to extend and generalize some common fixed point theorems for Expansive type mappings in complete cone metric spaces. We are attempting to generalize the several well- known recent results. Mathematical subject classification; 54H25, 47H10
Adomian decomposition Method and Differential Transform Method to solve the H...IJERA Editor
In this paper, we consider the AdomianDecomposition Method (ADM) and the Differential Transform Method (DTM) for finding approximate and exact solution of the heat equation with a power nonlinearity. Moreover, the reliability and performance of ADM and DTM. Numerical results show that these methods are powerful tools for solving heat equation with a power nonlinearity.
Symmetric quadratic tetration interpolation using forward and backward opera...IJECEIAES
The existed interpolation method, based on the second-order tetration polynomial, has the asymmetric property. The interpolation results, for each considering region, give individual characteristics. Although the interpolation performance has been better than the conventional methods, the symmetric property for signal interpolation is also necessary. In this paper, we propose the symmetric interpolation formulas derived from the second-order tetration polynomial. The combination of the forward and backward operations was employed to construct two types of the symmetric interpolation. Several resolutions of the fundamental signals were used to evaluate the signal reconstruction performance. The results show that the proposed interpolations can be used to reconstruct the fundamental signal and its peak signal to noise ratio (PSNR) is superior to the conventional interpolation methods, except the cubic spline interpolation for the sine wave signal. However, the visual results show that it has a small difference. Moreover, our proposed interpolations converge to the steady-state faster than the cubic spline interpolation. In addition, the option number increasing will reinforce their sensitivity.
Utilitas Mathematica Journal original research and review articles. Utilitas Mathematica Journal commits to strengthening our professional community by making it more just, equitable, diverse, and inclusive. Algebra ,Analysis ,Geometry Offers selected original research in Pure and Applied Mathematics and Statistics.
Partial differentiation, total differentiation, Jacobian, Taylor's expansion, stationary points,maxima & minima (Extreme values),constraint maxima & minima ( Lagrangian multiplier), differentiation of implicit functions.
Similar to Solving Partial Integro Differential Equations using Modified Differential Transform Method (20)
In the early twentieth century, major representatives of the Jadid movement became active participants in the socio-political processes in the Turkestan region. Usmonkhoja Polatkhoja, a progressive from Bukhara, was one of the beams not only in the Emirate of Bukhara, but also in Turkestan. He first participated in the reforms and progressives, and later in the national liberation movements, and fought for the prosperity and independence of the country.This article provides information about Usmonkhoja's life and work in Jadidism, revolts, national liberation struggles, and emmigiration.
Flood is one of the natural disaster known to be part of the earth biophysical processes, which its occurrence can be devastating; due to mostly anthropogenic activities and climatological factors. The aim of the research is to identify and map the extent at which the impact of flood due to intense rainfall and rise in water in the study area using geospatial techniques and the specific objectives are to carry out terrain analysis of the study area and to generate flood indicator maps of the study area. The study analyzed rain fall data;, the drainage system and Shuttle Radar Topographic Mission (SRTM 30m) of the area. ArcGIS 10.8 was to modelled and to generate the contributing factors map of the study area. The drainage system was generated through on-screen digitization of topographic map of scale 1:50,000 of Ondo South-West. The mean annual rainfall of Lagos State was generated in the ArcGIS environment from the rainfall data through spatial analysis tool. The SRTM was used in terrain analysis of the study area. The results generated showed the lowest mean annual rain fall of the area 1,700mm and the highest mean annual rain fall was 2,440mm. Digital elevation model (DEM), slope, flow direction were generated from the SRTM. Drainage density of the area was generated using the drainage system. The slope map of the entire area which are classified into five slope classes of very high (14%-48.5%) to high (7.6%-13.9%) to moderately high (4.2%-7.6%) to low (1.5%-4.2%) and very low (0. % - 1.2%).
Work study is a catch-all phrase encompassing a variety of methodologies, including method research and work measurement, that are applied in a variety of contexts and lead to a systematic assessment of all elements that affect the efficiency and economy of the situation under evaluation that is meant to be improved. The main aim of this study is to examine and enhance the process token in manufacturing a Perfume of the famous, well-known, aromatic, and beautiful Taif Roses. Some changes in the process has been suggested using method study and time study method which lead to reduction in process time, labor cost and production cost.
Workers are the maximum precious method of an association. Their importance to institutions requires not most effective the want to draw the trendy bents but additionally the need to preserve them for a long term. This paper specializes in reviewing the findings of former research carried out with the aid of colourful experimenters with the quit to identify determinants factors of hand retention. This exploration almost looked at the subsequent broad factors improvement openings, reimbursement, work- lifestyles balance, operation/ management, work terrain, social aid, autonomy, training and improvement.
Watering plants during the correct time is very important due to scientific reasons. Both underwatering, as well as overwatering, can lead to the growth of unhealthy plants or in extreme cases, the death of the plant/tree. These issues which are the case with most self-gardeners and plant lovers can be solved using the smart irrigation technique. The main purpose of this innovation is to assist plant lovers to continue their passion to grow plants at home with ease. Smart irrigation system helps in monitoring the moisture level which majorly affects plant growth besides other factors such as sunlight, fertility of the soil, etc. The digital planting pot has been designed in a way that it effectively incorporates the idea of smart irrigation. Arduino Uno R3 has been used as the main chip in this project along with a few other components like a soil moisture sensor, relay, and water pump. This project requires coding to synchronize all the components, and function properly. A required test has been carried out to review the functioning of the mechanism. The project was tested by once using the soil with enough moisture in the pot and then the soil with the least moisture. Both times, it worked exactly how it was supposed to function. When the soil with the least moisture was tested, there was a clear indication of a low level of moisture and accordingly, the water pump got triggered to water the plant, and when the soil with enough moisture was tested, there was again the clear indication of the correct level of moisture and the water pump was inactive. All the readings which were displayed on the LCD were checked back and forth during the project. The outcomes were the same as expected. Hence, it shows that every component in this project is actively functioning and the whole project is effectively designed.
Because of its accessibility and flexibility, cloud technology is among the most notable innovations in today's world. Having many service platforms, such as GoogleApps by Google, Amazon, Apple, and so on, is well accepted by large enterprises. Distributed cloud computing is a concept for enabling every-time, convenient, on-demand network access to processing resources including servers, storage devices, networks, and services that may be mutually configured. The major security risks for cloud computing as identified by the Cloud security alliance (CSA) have been examined in this study. Also, methods for resolving issues with cloud computing technology's data security and privacy protection were systematically examined.
This study's goal is to present Solutions for Determining the importance level of criteria in creating cultural resources’ attractiveness from tourists’ evaluation. Data were collected from 558 international tourists who chose Vietnam as the destination for tourism.
The study points out that we need to resolve challenges such as: building a safe, friendly destination, etc., destinations need to review and re-evaluate the services of their products and tourist attractions to prepare for the largest number of visitors and stimulate the domestic tourism market is a good solution: To boost the domestic tourism market, it is necessary to increase domestic flights and train connections to major tourist destinations.
A new convenient and efficient route for the synthesis of two very important hydroxo-bridged stepped-cubane copper complexes viz: [Cu4(bpy)4Cl2(OH)4]Cl2.6H2O (1) and [Cu4(phen)4Cl2(OH)4]Cl2.6H2O (2) have been obtained. This synthetic route from the mononuclear CubpyCl2 complex is easier, more reproducible and afforded the complex in a much higher yield than the other two previously reported procedures which were equally serendipitously discovered. The purity and formation of the complexes were confirmed with elemental (C,H,N) analysis and the details of the UV-Vis, Fourier transform infrared, electrospray ionization mass spectra of both complexes and the single crystal X-ray crystallography of 1 are presented and discussed. X-ray crystallography confirms the absolute structure of the complexes. The complexes were formed via the connection of four copper atoms to four hydroxide bridging ligands and four bipyridyl ligands with two chloride ligands. There are two coordinate environments around two pairs of copper atoms (CuN2ClO2 and CuN2O3) and each copper atom is pentacoordinate with square pyramidal geometry.
Artocarpus heterophyllus Lam., which is commonly known as jackfruit is a tropical fruit, belonging to Moraceae family, native to Western Ghats of India and common in Asia, Africa, and some regions in South America. It is known to be the largest edible fruit in the world. The Jackfruit is an extremely versatile and sweet tasting fruit that possess high nutritional value. Jackfruit is rich in nutrients including carbohydrates, proteins, vitamins, minerals, and phytochemicals. The jackfruit has diverse medicinal uses especially antioxidant, anti-inflammatory, antimicrobial and antiviral properties, anticancer and antifungal activity, anthelminthic activity. Traditionally, this plant is used in the treatment of various diseases especially for treatment against inflammation, malarial fever, diarrhoea, diabetes and tapeworm infection. Jackfruit is a good natural source of phytochemicals such as phenolics, flavonoids and tannins, saponins. The health benefits of jackfruit have been attributed to its wide range of physicochemical applications. The use of jackfruit bulbs and its parts has also been reported since ancient times for their therapeutic qualities. The beneficial physiological effects may also have preventive application in a variety of pathologies.
Myogenic differentiation requires to be exactly explored for the effective treatment of fracture. The speed of healing is affected by skeletal muscle, linked to activation of specific myogenic transcription factors during the repair process. In previous study, we discovered that psoralen enhanced differentiation of osteoblast in primary mouse. In the current study, we show that psoralen stimulates myogenic differentiation through the secretion of factors to hone the quality of repair in fractured mice. 3-month old mice were treated with corn oil or psoralen followed by a tibial fracture surgery. Fractures were tested 7, 14, and 21 days respectively later by histology and images observation. Skeletal muscles including soleus muscle and posterior tibial muscle around the damaged bone were collected for quantitative real-time PCR, HE staining, as well as western blot. Daily treatment with psoralen at seven, fourteen days or twenty-one days improves protein or mRNA levels responsible for the whole myogenic differentiation process, makes the muscle fibers more tightly aligned, and promotes callus formation and development. This data shows that high levels of myogenic transcription factors in the process of fracture healing in mice foster the repair of damaged muscles, and indicates a pharmacological approach that targets myogenic differentiation to improve fracture repair. This also reflects the academic thought of "paying equal attention to both muscles and bones" in the prevention and treatment of fracture healing.
The current pandemic has generated the search for new reliable and economic alternatives for the detection of SARS-CoV-2, which produces the COVID-19 disease, one of the recommendations by the World Health Organization, is the detection of the virus by RT-qPCR methods from upper respiratory tract samples. The discomfort of the pharyngeal nasopharyngeal swab described by patients, the requirement of trained personnel, and the generation of aerosols, are factors that increase the risk of infections in this type of intake. It is known that the main means of transmission of SARS-CoV-2 is through aerosols or small droplets, which is why saliva is important as a relevant means of detecting COVID-19. In this study, a modified method based on SARS-CoV-2 RNA release from saliva is described, avoiding the isolation and purification of the genetic material and its quantification of viral copies; the results are compared with paired pharyngeal/nasopharyngeal swab samples (EF/EN). Results showed good agreement in saliva samples compared to EF/EN samples. On average, a sensitivity for virus detection of 80% was demonstrated in saliva samples competing with EF/EN samples. The use of saliva is a reliable alternative for the detection of SARS-CoV-2 by means of RT-PCR in the first days of infection, having important advantages over the conventional method. Saliva still needs to be studied completely to evaluate the detection capacity of the SARS-CoV-2 nucleic acid, however, the described process is viable, due to the decrease in materials and supplies, process times, the increment in the sampling and improvement of laboratory performance.
A recent study establishes that since 1970, there has been an ecological gap between human needs and the planet's resources, with annual resource demand exceeding the bio-productivity of the planet. Specifically, humanity utilises equivalent of 1.75 earths to produce the ecological resources used, with half of this attributable to food consumption. The present work therefore seeks to provide an empirically-based insight into the environmental sustainability of the EF of food consumption in Ijebu Ode. A descriptive cross-sectional approach was used, and primary data were collected from 400 systemically sampled households via structured questionnaires and analysed descriptively using Microsoft Excel and inferentially using mathematical models for calculating ecological footprints. Findings revealed that the household EF of food consumption in Ijebu Ode is 0.05gha per capita, with the footprint of cereal consumption (0.17gha; 37%) taking the major share, followed by meat with a footprint of 0.11gha (23.9%). As a result, it was concluded that Ijebu Ode has sustainable food consumption, which is necessary for its environmental sustainability. However, the sustenance of the former requires creating awareness of the need for sustainable consumption and prioritisation of integrated and population-wide policies and food intervention initiatives to encourage attitudinal change in favour of sustainable food consumption while fostering sustainable food production strategies amidst current environmental realities.
The symmetry occurs in most of the phenomena explained by physics, for example, a particle has positive or negative charges, and the electric dipoles that have the charge (+q) and (-q) which are at a certain distance (d), north or south magnetic poles and for a magnetic bar or magnetic compass with two poles: North (N) and South (S) poles, spins up or down of the electron at the atom and for the nucleons in the nucleus In this form, the particle should also have mass symmetry. For convenience and due to later explanations, I call this mass symmetry or mass duality as follows: mass and mass cloud. The mass cloud is located in the respective orbitals given by the Schrödinger equation. The orbitals represent the possible locations or places of the particle which are determined probabilistically by the respective Schröndiger equation.
Metal-organic molybdenum complexes were synthesized by the hydrothermal method using ammonium heptamolybdate as the metallic source, and as the organic ligand terephthalic acid (BDC) or bis(2-hydroxyethyl) terephthalate (BHET), obtained via glycolysis of poly(ethylene)terephthalate (PET). The BDC-Mo and BHET-Mo complexes were characterized by XRD, N2 physisorption, TGA, ATR-FTIR, SEM, XPS and their in vitro biocompatibility was tested by porcine fibroblasts viability. The results show that molybdates (MoO4-2) are coordinated to the carbonyl functional groups of BDC and BHET by urea bonding (-NH-CO-NH-) which is related to their high biocompatibility and high thermal stability. These organic molybdate complexes possess rectangular prism particles made up of rods arrays characteristics of molybdenum oxides (MoO3). The organic complexes BDC-Mo and BHET-Mo do not show to be cytotoxic for porcine dermal fibroblasts growing on their surface for up to 48 h of culture.
Exercise training with varying intensity increases maximal oxygen intake (VO2max), a strong predictor of cardiovascular and all-cause mortality. Purpose: The aim of this study was to find out the influence of low intensity aerobic training on the vo2 max in 11 to 14 years school girls in Hyderabad district. Methodology: The research scholar has randomly selected thirty (N=30) high school girls were selected as subjects and their age ranged between 11 to 14 years. The subjects were divided into two equal groups, each group consist of 15 total 30. Group one acted as experimental group (EG) and group two acted as control group (CG). The dependent variable vo2 max was selected and it is measured by manual test. Statistical Tool: The statistical tool paired sample ‘t’ test was used for analysing of the data and the obtained ‘t’ ratio was tested for significance at 0.05 level of confidence. Results: The analysis of the data revealed that there was a significant improvement on vo2 max by the application of low intensity aerobic.
Hybrid rice has the potential to outperform existing inbred rice and was said to have the potential to produce 14-20 % more yield. In response, Malaysia Government has introduced its very own first Hybrid Rice Variety knew as Kadaria 1 developed by MARDI. This is in line with one of the strategies outlined in Dasar Agromakanan Negara (DAN) 2011-2020 as an approach to increasing rice productivity within Malaysia. The next step would be developing our hybrid seed rice production system. Therefore, an experiment to determine the planting ratio and planting distance between 0025A (A)-a hybrid with MR283 (R)-inbreed variety was carried out. Planting ratios studied in this study were 2:4, 2:6, 2:8, and 2:10 while planting distance was 14 x 30 cm, 16 x 30 cm, and 18 x 30 cm. Statistical analyses suggested that yield R, yield A, and panicle number A were significantly affected by planting ratios while yield A was significantly affected by an interaction between planting distance and planting ratios. Panicle number A performed significantly higher at planting ratios of 2:4 compared to 2:10. Yield R shows higher significant performance under ratio 2:6 compared to 2:4 and 2:8. Relatively, yield A performed the best under planting distance of 18 x 30 cm. Furthermore, under this particular planting distance, the planting ratio of 2:10 shows the highest significant figure while 2:8 exhibits statistical parity. Both yield R and yield A were significantly affected by planting ratios and have a significant positive association with each other. Therefore, the planting ratio of 2:10 should be the best since it contributed to significantly highest value for yield A while yield R under 2:10 shows statistical parity with 2:6 which was the highest significant value. In conclusion, the combination of 2:10 with a planting distance of 18 x 30 cm was the best since it shows best potential for both yields A and yield R
Cassava plays an important role in improving food security and reducing poverty in rural areas. Despite its importance, its production in Senegal remains low compared to other African countries. Nowadays, it is confronted with numerous constraints. It is in this context that a study was conducted on the cassava production system in the Thiès "cassava granary" region, with the objective of examining farmers' cultivation practices. It was conducted in eight communes located in the department of Tivaouane, some of which are located in the Niayes agro-ecological zone and others in the central-northern groundnut basin. Surveys were conducted among the largest cassava producers in these communes. Analysis of the results showed that cassava is only grown in the rainy season with the same cultivation practices that have been used for years. Of the five varieties listed by the President of the Senegalese Cassava Interprofession, only four are grown in the areas surveyed. The Terrasse (43%) and Kombo (36%) varieties are grown more by our respondents in the Niayes area. Soya (75%) and Wallet "Parydiey" (20% of our sample) dominate in the central-northern groundnut basin.
Cassava plays an important role in improving food security and reducing poverty in rural areas. Despite its importance, its production in Senegal remains low compared to other African countries. Nowadays, it is confronted with numerous constraints. It is in this context that a study was conducted on the cassava production system in the Thiès "cassava granary" region, with the objective of examining farmers' cultivation practices. It was conducted in eight communes located in the department of Tivaouane, some of which are located in the Niayes agro-ecological zone and others in the central-northern groundnut basin. Surveys were conducted among the largest cassava producers in these communes. Analysis of the results showed that cassava is only grown in the rainy season with the same cultivation practices that have been used for years. Of the five varieties listed by the President of the Senegalese Cassava Interprofession, only four are grown in the areas surveyed. The Terrasse (43%) and Kombo (36%) varieties are grown more by our respondents in the Niayes area. Soya (75%) and Wallet "Parydiey" (20% of our sample) dominate in the central-northern groundnut basin.
We are witnessing very demanding and stressful times in which we live, and an occupation that is particularly exposed to stress and different working conditions is the job of a nurse. Exposing themselves to everyday challenges and stressful situations, nurses reach a stage of great emotional and physical exhaustion, lethargy, dissatisfaction, and poorer work achievements, which we know as burnout. The aim of this paper was to determine whether there is and to what extent professional burnout is present in nurses and technicians working in nursing homes across Slovenia and Croatia. The paper is answering the questions of the extent of the burnout influenced by individual characteristics (age, education, years of service and work experience at the current workplace). The study involved a validated questionnaire “The Oldenburg Burnout Inventory (OLBI)” to measure professional burnout. Surveying of the nurses was conducted online at their home institutions. The results show that all respondents have a medium or high level of professional burnout, while no one has a low level or shows no signs of burnout. In terms of age, the group from 55-65 years of age had the highest relative level of burnout in the age group category. With regard to education, the highest burnout was measured in registered nurses.
Hepatitis B and C are one of the most commonly transmitted viral infections through needlestick injury apart from HIV. It is highly prevalent in India and many other developing countries. It accounts for high mortality rate globally amongst low socio-economic groups of individuals. Healthcare workers, especially dental professionals are at higher risk of infection due to high exposure to saliva, blood and sharps. Accidental occupational exposure to non-sterile conditions and its development to more critical and fatal conditions can be reduced through vaccination, prophylactic medications and practicing high safety measures.
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Solving Partial Integro Differential Equations using Modified Differential Transform Method
1. Asian Journal of Applied Science and Technology
Volume 4, Issue 3, Pages 109-118, July-September 2020
ISSN: 2456-883X www.ajast.net
109
Solving Partial Integro Differential Equations using Modified Differential Transform
Method
Yuvraj G. Pardeshi1
, Vineeta Basotia2
& Ashwini P. Kulakarni3
1
Research Scholar, Shri JJT University, Jhunjhunu, Rajasthan, India.
2
Assistant Professor, Department of Mathematics, Shri JJT University, Jhunjhunu, Rajasthan, India.
3
Associate Professor, Department of Mathematics, Shri V.N.Naik COE, Nasik, Maharashtra, India.
DOI: 10.38177/ajast.2020.4315
Article Received: 07 June 2020 Article Accepted: 21 August 2020 Article Published: 18 September 2020
1. Introduction
The theory and applications of PIDE's play an important role in the various fields of science and engineering. The
analysis of such PIDE can be found in [5-8]. In the last few years, Jyoti Thorwe and Sachin Bhalekar [1] used
Laplace transform method and Mohand M. Abdelrahim Mehgob and Tarig M. Elzaki [3] used Elzaki transform
method to solve linear partial integro-differential equations (PIDE) with convolution kernel. They converted the
PIDE to an ordinary differential equation (ODE).
Solving this ODE and applying inverse transform they obtain the exact solution of the problem. Ranjit Dhunde and
G. L. Waghmare [2] used double Laplace transform and Mohand M. Abdelrahim Mehgob [4] applied double Elzaki
transform to solve PIDE. They converted PIDE to an algebraic equation and Appling inverse transform they
obtained exact solution.
Differential Transform Method is a semi-analytical numerical technique which depends on Taylor's series for the
solution of differential and integral equations. The concept of differential transform method was first introduced by
Zhou [9] who solved linear and non-linear initial value problems in electric circuit analysis.
Recently, The various types of differential equations, integro differential equations, and Volterra integral equations
solved by using two-dimensional DTM [12-19]. The modified differential transform method is a modified version
of two-dimensional DTM, and it will take less computational time and effort to solve PIDEs.
In this paper, we will find an analytical-numerical solution of linear partial integro differential equations (PIDE)
with convolution kernel using a modified differential transform method.
2. PRELIMINARIES
2.1 Partial Integro Differential Equation (PIDE)
The general form of a linear PIDE with convolution kernel (see [1-4])
ABSTRACT
In this paper, we introduced the modified differential transform which is a modified version of a two-dimensional differential transform method.
First, the properties of the modified differential transform method (MDTM) are presented. After this, by using the idea modified differential
transform method we will find an analytical-numerical solution of linear partial integro-differential equations (PIDE) with convolution kernel which
occur naturally in various fields of science and engineering. In some cases, the exact solution may be achieved. The efficiency and reliability of this
method are illustrated by some examples.
Keywords: Modified differential transform method, Partial integro-differential equation, Maclaurin’s Series, Differential transform method, Integro
differential equation.
2. Asian Journal of Applied Science and Technology
Volume 4, Issue 3, Pages 109-118, July-September 2020
ISSN: 2456-883X www.ajast.net
110
∑ ai (
∂i
u
∂xi
) + ∑ bi (
∂i
u
∂ti
) + cu(x, t)
n
i=1
m
i=1
+ ∑ di ∫ Ki(t − y)
t
0
(
∂i
u
∂xi
) dy + f(x, t) = 0
r
i=1
(1)
Where, ai , bi , c and di are constants or the functions of x alone. And f(x, t) , Ki(t − y) are known functions.
2.2 Modified Differential Transform Method (MDTM)
Taylor’s series expansion of the function u(x, t) with respect to specific variable t = t0 is,
U(x, h) =
1
h!
{
∂h
∂th
u(x, t)}
t=t0
; h ≥ 0 (2)
Where, 𝑢(𝑥, 𝑡) the original is function and U(x, h) is transformed function.
Therefore, the inverse modified differential transform of a function U(x, h) is define by,
u(x, t) = ∑ U(x, h)(t − t0)h
∞
h=0
; h ≥ 0 (3)
Note: t0 = 0
U(x, h) =
1
h!
{
∂h
∂th
u(x, t)}
t=0
; h ≥ 0 (4)
∴ u(x, t) = ∑ U(x, h)th
; h ≥ 0
∞
h=0
We summarized modified differential transforms of some standard functions in the following table [22, 23].
Table 1: MDTM w. r. t 𝑡 of some standard functions
Original Function 𝒖(𝒙, 𝒕) Transformed Function 𝑼(𝒙, 𝒉)
𝒖(𝒙)𝒗(𝒕) 𝑢(𝑥)𝑉(ℎ)
𝒙 𝒎
𝒕 𝒏
𝑥 𝑚
𝛿(ℎ − 𝑛)
𝒕 𝒏
𝛿(ℎ − 𝑛)
𝒙 𝒎
𝑥 𝑚
𝛿(ℎ)
𝒆 𝒂𝒙+𝒃𝒕
𝑒 𝑎𝑥
𝑏ℎ
ℎ!
𝒙 𝒎
𝒔𝒊𝒏𝒂𝒕 𝑥 𝑚
ℎ!
𝑠𝑖𝑛 (
ℎ𝜋
2
)
𝒙 𝒎
𝒄𝒐𝒔𝒂𝒕 𝑥 𝑚
ℎ!
𝑐𝑜𝑠 (
ℎ𝜋
2
)
We summarized some fundamental properties of modified differential transforms in the following table [22, 23].
Theorem 1 [22,23]: If modified differential transform of 𝑓(𝑥, 𝑡), 𝑢(𝑥, 𝑡), 𝑔(𝑡) and 𝑣(𝑡) are
𝐹(𝑥, ℎ), 𝑈(𝑥, ℎ), 𝐺(ℎ) and 𝑉(ℎ) respectively then,
8. Asian Journal of Applied Science and Technology
Volume 4, Issue 3, Pages 109-118, July-September 2020
ISSN: 2456-883X www.ajast.net
116
If ℎ = 0 ∴ 𝑈(𝑥, 3) = −
𝑥
3!
If ℎ = 1 ∴ 𝑈(𝑥, 4) = 0
If ℎ = 2 ∴ 𝑈(𝑥, 5) =
𝑥
5!
If ℎ = 3 ∴ 𝑈(𝑥, 6) = 0
If ℎ = 4 ∴ 𝑈(𝑥, 7) = −
𝑥
7!
In general,
∴ 𝑈(𝑥, 2𝑚 + 1) = (−1) 𝑚
𝑥
(2𝑚 + 1)!
∀ 𝑚 𝑎𝑛𝑑 𝑈(𝑥, 2𝑚) = 0; ∀ 𝑚
We know that,
∴ 𝑢(𝑥, 𝑡) = ∑ 𝑈(𝑥, ℎ)𝑡ℎ
∞
ℎ=0
= 𝑥(𝑡 −
𝑡3
3!
+
𝑡5
5!
−
𝑡7
7!
+
𝑡9
9!
− ⋯ … )
= 𝑥 𝑠𝑖𝑛𝑡
Fig.3 Solution of 𝑢(𝑥, 𝑡) = 𝑥 𝑠𝑖𝑛𝑡
4. Conclusion
PIDE’s are used in the modelling various phenomenon in science and engineering. The modified differential
transform method is successfully used to solve linear partial integro-differential equations (PIDE) with convolution
kernel. We get an analytical-numerical solution. We concluded that to solve PIDEs by other traditional methods
required initial as well as boundary conditions but MDTM method required only initial conditions to solve PIDEs.
It is observed that MDTM takes less computational time and effort and it is a very powerful, efficient technique to
solve PIDEs. In some cases, the exact solution may be achieved. We hope some other types of PIDE can be used in
various fields modelling real-life phenomena.
-4
-2
0
2
4
0
1
2
3
4
5
6
-4
-2
0
2
4
x
t
u(x,t)
-3
-2
-1
0
1
2
3
9. Asian Journal of Applied Science and Technology
Volume 4, Issue 3, Pages 109-118, July-September 2020
ISSN: 2456-883X www.ajast.net
117
References
[1] Jyoti Thorwe and Sachin Bhalekar, (2012), Solving Partial Integro-Differential Equations Using Laplace
Transform Method. American Journal of Computational & Applied Mathematics, 2(3):101-104.
[2] Ranjit R. Dhunde1 and G. L. Waghmare, (2015). Solving Partial Integro-Differential Equations Using Double
Laplace Transform Method. American Journal of Computational and Applied Mathematics, 5(1): 7-10.
[3] Mohand M. Abdelrahim Mahgob and Tarig M. Elzaki; (2015). Solution of Partial Integro-Differential
Equations by Elzaki Transform Method. Applied Mathematical Sciences, Vol. 9, No. 6, pp-295 – 303.
[4] Mohand M. Abdelrahim Mahgob, (2015). Solution of Partial Integro-Differential Equations by Double Elzaki
Transform Method. Mathematical Theory and Modeling, Vol. 5(5):61-66.
[5] Bahuguna, D. and Dabas, J., (2008), Existence and uniqueness of a solution to a PIDE by the method of lines.
Electronic Journal of Qualitative Theory of Differential Equations, 4:1-12.
[6] M. Dehghan, (2006). Solution of a partial integro differential equation arising from viscoelasticity, Int. J. Comp.
Math., 83:123-129.
[7] J.-M. Yoon, S. Xie, and V. Hrynkiv, A Series Solution to a Partial Integro –Differential Equation Arising in
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[8] Rehman, M. (2007). Integral equations and their applications, WIT Press.
[9] J.K. Zhou, (1996). Differential Transform and its Application for Electric Circuits, Huazhong University
Press, Wuhan, China.
[10] Arikoglu, A. & Ozkol, I. (2008). Solutions of integral and integro-differential equation systems by using
differential transform method. Comput. Math. Appl., 56, 2411-2417.
[11] A. Tari and S. Shahmorad, (2007). Differential transform method for the system of two dimensional nonlinear
Volterra integral differential equations, Computers and Mathematics with Applications, 61: 2621-2629.
[12] M. Mohseni Moghadam and H. Saeedi, (2010). Application of differential transform for solving the Volterra
integro-partial differential equations, Iranian Journal of Science and Technology, Transaction A Vol. 34, No. A1.
[13] Hadizaheh, M. &Moatamedi, N. (2007). A new differential transformation approach for two-dimensional
Volterra integral equations. International Journal of Computer Mathematics,84(4), 515-526.
[14] C.K. Chen, (1999). Solving partial differential equations by two-dimensional differential transform, Appl.
Math. Comput. 106:171–179.
[15] Reza Abazari and Adem Kiliçman, 2013. Numerical Study of Two-Dimensional Volterra Integral by RDTM
and Comparison with DTM. Abstract and Applied Analysis, article id 929478.
[16] Y. Keskin, G. Oturanc, Reduced Differential Transform Method For Solving Linear And Nonlinear Wave
Equation. Iranian Journal of Science & Technology, Transaction A, Vol. 34, No. A2.
10. Asian Journal of Applied Science and Technology
Volume 4, Issue 3, Pages 109-118, July-September 2020
ISSN: 2456-883X www.ajast.net
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[17] Aruna K. and A. S. V. Ravi Kanth, (2013). Differential Transform Method for a class of Differential equations.
Ph.D. Thesis, VIT University, Vellore, Tamil Nadu, India.
[18] Yuvraj G. Pardeshi, Vineeta Basotia and Ashwini. P. Kulkarni, (2019). Solution of Partial Integro
Differential Equations using MDTM and Comparison with Two Dimensional DTM., International Journal of
Scientific & Technology Research, Volume 8(11): 1215-1221.