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Open Access Article
1 - Transverse perturbation on three-dimensional ion acoustic waves in electron–positron–ion plasma with high-energy tail electron and positron distribution
M. Shahmansouri E. Astaraki -
Open Access Article
2 - The new implicit finite difference scheme for two-sided space-time fractional partial differential equation
Hamid Reza Khodabandehlo Elyas Shivanian Shaaban MostafaeeFractional order partial differential equations are generalizations of classical partial differential equations. Increasingly, these models are used in applications such as fluid flow, finance and others. In this paper we examine some practical numerical methods to solv MoreFractional order partial differential equations are generalizations of classical partial differential equations. Increasingly, these models are used in applications such as fluid flow, finance and others. In this paper we examine some practical numerical methods to solve a class of initial- boundary value fractional partial differential equations with variable coefficients on a finite domain. Stability, consistency, and (therefore) convergence of the method are examined. It is shown that the fractional method based on the shifted Grunwald formula is unconditionally stable. This study concerns both theoretical and numerical aspects, where we deal with the construction and convergence analysis of the discretization schemes. A numerical example is presented and compared with exact solution for its order of convergence./////////Fractional order partial differential equations are generalizations of classical partial differential equations. Increasingly, these models are used in applications such as fluid flow, finance and others. In this paper we examine some practical numerical methods to solve a class of initial- boundary value fractional partial differential equations with variable coefficients on a finite domain. Stability, consistency, and (therefore) convergence of the method are examined. It is shown that the fractional method based on the shifted Grunwald formula is unconditionally stable. This study concerns both theoretical and numerical aspects, where we deal with the construction and convergence analysis of the discretization schemes. A numerical example is presented and compared with exact solution for its order of convergence. Manuscript profile -
Open Access Article
3 - یک روش صریح تک گامی برای حل عددی مسائل کنترل بهینه
موسی عبادی اسفند ملیح ملکی احمدرضا حقیقی علی عبادیاندر این پژوهش، روش پیشرو-پسرو جاروب، برای حل مسائل کنترل بهینه به کار برده شده و یک روش هیبریدی بر اساس روش های صریح رانگ – کوتا از مرتبه 4و5 برای تقریب عددی مسائل کنترل بهینه پیشنهاد شده است. همگرایی روش اثبات گردیده است و دقت این روش برای حل مسائل کنترل بهینه، از Moreدر این پژوهش، روش پیشرو-پسرو جاروب، برای حل مسائل کنترل بهینه به کار برده شده و یک روش هیبریدی بر اساس روش های صریح رانگ – کوتا از مرتبه 4و5 برای تقریب عددی مسائل کنترل بهینه پیشنهاد شده است. همگرایی روش اثبات گردیده است و دقت این روش برای حل مسائل کنترل بهینه، از هردو روش رانگ – کوتای مرتبه 4و5 بیشتراست. Manuscript profile -
Open Access Article
4 - On Optimal Quadrature Rule for Solving Fuzzy Fredholm Integral Equations
R. Ezzati M. M. Sadatrasou -
Open Access Article
5 - Design an Adaptive Sliding Mode Controller for a Class of Underactuated Systems
Hossein Moeinkhah Mohammad Ahmadi Balootaki -
Open Access Article
6 - On the Analysis of FGM Beams: FEM with Innovative Element
M Zakeri A Modarakar Haghighi R Attarnejad -
Open Access Article
7 - Crack Influences on the Static and Dynamic Characteristic of a Micro-Beam Subjected to Electro Statically Loading
A.R Shahani G Rezazadeh A Rahmani -
Open Access Article
8 - تحلیل ترک در ارتباط با پایداری سدهای وزنیبتنی با استفاده از نرمافزار CADAM (مطالعه موردی: سد تنظیمی دز)
علی بهشتی حسن کیامنشمطالعه حاظر به بررسی تنش و تحلیل ترک در سدهای ­وزنی-بتنی تحت شتاب­ ثابت حاصل از زمین­لرزه در راستای افقی و زلزله­های القایی تولید شده از جانب مخزن سد پرداخته است. این تحلیل با استفاده از نرم­افزارCADAM انجام شد. هدف اصلی از محاسبات تنش، تعیین Moreمطالعه حاظر به بررسی تنش و تحلیل ترک در سدهای ­وزنی-بتنی تحت شتاب­ ثابت حاصل از زمین­لرزه در راستای افقی و زلزله­های القایی تولید شده از جانب مخزن سد پرداخته است. این تحلیل با استفاده از نرم­افزارCADAM انجام شد. هدف اصلی از محاسبات تنش، تعیین میزان کشش طول شکاف می­باشد که بر اثر نیروهای اینرسی موجود در سد ایجاد می­شوند و تأثیر این تنش­ها بر پایداری سد بتنی می­باشد. نرمافزار CADAM در سال 2003 در دانشگاه مونترال و برای تحلیل سدهای بتنی در حالات مختلف طراحی شده است. در این مقاله به تحلیل شکاف و تأثیر آن بر پایداری سد وزنی­بتنی با بیشینه زلزله g28/0 پرداخته شد و نتایج آن در هر درز اجرایی به صورت مجزا مورد تحلیل قرار گرفت. در تمامی درزها حداقل ضریب ایمنی در برابر پایداری (حداقل 3/1) حاصل شد. با مشاهده جداول نتایج می­توان به این نتیجه رسید که پایداری سد تنظیمیدز برای شتاب زلزله افقی معادل g 28/0 مناسب بوده هر چند ترک­هایی در بدنه سد بوجود می­آید اما باعث خرابی سد نمی­شوند و تمامی پارامترهای بدست آمده در حالت زلزله و حالت عادی قابل قبول می­باشند. Manuscript profile -
Open Access Article
9 - Application of fuzzy theory in analysis of slides considering the iandslide of Mohammad Abad- Jiroft
Mehdi Mohammadi Hossein Tavakoli Hamid ShojaeeIn the present paper, fuzzy theory is used for the analysis of landslides and the state of Mohammad Abadlandslide, located in Jiroft- Kerman road, is investigated using this method. Shear strength parameters, unitweight and piezometric level which have uncertainty are s MoreIn the present paper, fuzzy theory is used for the analysis of landslides and the state of Mohammad Abadlandslide, located in Jiroft- Kerman road, is investigated using this method. Shear strength parameters, unitweight and piezometric level which have uncertainty are selected as variables and the statistic distribution ofthese parameters are obtained using best fit software. Also, using the limit equilibrium method, sensivity analysisis done the shear strength parameters with respect to the safety factor. Finally, the parameters are chosen as thefuzzy set and the stability analysis is done based on the limit equilibrium method. Results show that, since thefuzzy set considers a range of safety factors, stability analysis is done with more certainty and also, as the resultsshow, the considered landslide is unstable Manuscript profile -
Open Access Article
10 - Studying the Effect of Horizontal Drains on Stability of Heterogeneous and Homogeneous Earth Dams during Rapid Drawdown Condition
Alireza Hajiani Boushehrian Azadeh Rezaee Arash Vafamand -
Open Access Article
11 - Srain Yield Stability of some Bread Wheat Cultivars Introduced in Moderate and Cold Area of Iran
Alireza TarinejadDue to genotype×environmental interaction, seed yields of genotypes are usually evaluated in broad range of environmental conditions to obtain efficient information concering cultivar selection and introduction. For this purpose, an experiment was conducted based MoreDue to genotype×environmental interaction, seed yields of genotypes are usually evaluated in broad range of environmental conditions to obtain efficient information concering cultivar selection and introduction. For this purpose, an experiment was conducted based on RCBD with three replications, using 20 bread wheat cultivars to study seed yield stability of cultivars introduced during the past several years to cold, and moderate areas of Iran. This experiment was carried out at the Agriculture Research Station of Islamic Azad University, Tabriz branch during 2009-2012, for 4 years. Because of significant genotype×environmental interaction, stability analysis was performed by all possible methods to obtain stable and high potential cultivars. The result of stability analysis showed non parametric, AMMI, GGE biplot and simultaneous selection stability methods introduce lower, high, and higher yielding cultivars to be stable. On basis of all stability methods, Bahar (spring type introduced in 2008), Mahdavi (facultative type released in 1995), and Azadi cultivar (winter type introduced in 1989) respectively with 7.27, 7.13 and 6.88 (t/ha grain yield) were stable and were highly potential cultivars among other cultivars. These cultivars could be introduced to researchers as stable cultivars to be used as parental ones in breeding programs for production of highly stable and seed yielding lines. Manuscript profile -
Open Access Article
12 - Stability of Robust Lyapunov Based Control of Flexible-Joint Robots Using Voltage Control Strategy Revisited
Ali Deylami -
Open Access Article
13 - Task-space Control of Robots Using an Adaptive Taylor Series Uncertainty Estimator Revisited
Masoud Shahhosseini -
Open Access Article
14 - Stability analysis of jointed rock slopes using key block method (Case study: Gas Flare site in 6, 7 and 8 phases of South Pars Gas Complex)
Mohammad Azarafza Ali Reza Yarahmadi Bafghi Ebrahim Asghari-Kaljahi Gholamreza Bahmannia Mohammadreza Moshrefy-far -
Open Access Article
15 - Stability analysis and numerical modelling of toppling failure of discontinuous rock slope (A Case study)
Shahrzad Nikoobakht Mohammad Azarafza -
Open Access Article
16 - New Applications on Linguistic Mathematical Structures and Stability Analysis of Linguistic Fuzzy Models
Jafar Tavoosi Sajjad Rahmati -
Open Access Article
17 - Dynamics of Food Chain Model: Role of Alternative Resource for Top Predator
ANUJ KUMAR MANJU AGARWAL -
Open Access Article
18 - Mathematical Model of Herpes Simplex Virus – II (HSV-II) with Global Stability Analysis
Eshetu Gurmu Boka Bole Purnachandra Koya -
Open Access Article
19 - Mathematical Modeling of COVID-19 Pandemic with Treatment
Abayneh Bezabih -
Open Access Article
20 - Stability Analysis of Fractional Order Mathematical Model of Leukemia
Lahoucine Boujallal -
Open Access Article
21 - Coronavirus (covid-19) Transmission Dynamics with Vaccination: A Mathematical Model Analysis
Mengesha Firdawoke Mekash Mohammed -
Open Access Article
22 - A Computational Approach for Fractal Mobile-Immobile Transport with Caputo-Fabrizio Fractional Derivative
Sadegh Sadeghi -
Open Access Article
23 - SPOT PATTERNS IN GRAY SCOTT MODEL WITH APPLICATION TO EPIDEMIC CONTROL
Muhammad Abdullahi Yau M. U. Adehi Muktari Garba -
Open Access Article
24 - Yield Stability of chickpea promising Genotypes in autumn planting of Using GGE biplot
payam pezeshkpour Rahmatolah Karimizadeh Amir Mirzaei Mohhamad BarzaliThe purpose of this study was to identify genotype of high yielding and stable types in different environmental conditions. The experiment was conducted using eighteen chickpea genotypes in randomized complete bloch design with three replications in four agricultural re MoreThe purpose of this study was to identify genotype of high yielding and stable types in different environmental conditions. The experiment was conducted using eighteen chickpea genotypes in randomized complete bloch design with three replications in four agricultural research stations i.e. lorestan Ilam,gachsaran and Gonbad ,two successive cropping seasons (2014-2016) in autumn planting under rainfed conditions. The highest average seed yield (2911.5 kg.ha-1) was obtained at Lorestan in 2015 -16 and the lowest (742.9 kg.ha-1) was at Ilam in 2014-15. The highest and lowest average seed yield obtained in G2(1509.4 kg.ha-1) and G13 (1266.3 kg.ha-1), genotypes, respectively.The contribution of E, G, and GEI to the total variation in seed yield was about 87.7%, 0.65 % and 11.64%, respectively. The GEI was partitioned using GGE biplot model. According to singular value partitioning, the first two principal components explained PC1=36.6% and PC2=19.5% of total variations in data of seed yield. On the basis of GGE biplots, G2, G6 and G12 had high seed yield and yield stability as compared to the other genotypes.Genotypes G2,G17,G12,G4 and G6 were stable genotypes .On the other hand , genotype G2 had higher seed yield and , on the other hand , showed higher yield stability and was showed to be superior genotype compared to other. Manuscript profile