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Open Access Article
1 - Prediction of Banking Distress and Contagion of Crisis in the Banking Network (With Application of Linear and Non-Linear Hybrid Approach)
Ahmad Bidi Feraydoon Rahnamay Roodposhti Reza Gholami Jamkarani hamidreza kordlouie Morteza Baky HeskouiiThe present research aimed at prediction of banking disorder and contagion of crisis in the banking network is conducted by application of linear and non-linear hybrid approach. The present research method is of descriptive-survey, and practical in terms of objective. T MoreThe present research aimed at prediction of banking disorder and contagion of crisis in the banking network is conducted by application of linear and non-linear hybrid approach. The present research method is of descriptive-survey, and practical in terms of objective. Therefore, in order to attain this objective, firstly, banking system fragility index (BSFI) is reviewed as an early warning system in order to identify banking crisis, in four banking system sectors (specialized, commercial, private and credit institutions), and banking system fragility index is reviewed in the stated four sectors by applying linear and non-linear approaches by making use of data obtained during March 2016 until December 2020. Results of calculation of banking system fragility index in sub-sectors of the banking system indicate periods of high fragility of the banking system, in particular in January, February and March 2017, which might be due to effects of election. Furthermore, in December 2020, high risk-taking was observed in the banking system, arising from creation of a bubble, which represents a strong warning for future problems of the national banking system. Furthermore, during the review period, banking network is noticeably fragile. Notably, results of Granger linear causality test indicate two-sided causality between credit institutions and private banks, a one-sided causal relationship from private banks to specialized and commercial banks and also a one-sided causal relationship from specialized banks to commercial banks. Manuscript profile -
Open Access Article
2 - Application of four-wave mixing for estimation of nonlinear parameters in compact ring cavity laser based on Bi-EDF
Sharifeh Shahi Sasan Soudi Yalda Ghorbani Bahareh Khaksar jalali Sulaiman Wadi Harun -
Open Access Article
3 - Studying a numerical stable and quadratic convergence method for solving a new class of absolute value equations.
mozafar rostami Taher Lotfi Ali BerahmandIn this paper, a new class of absolute value equations is studied as follows:Ax-B|x|-b=o, ( B≠I, σ_"max" (|B|)<σ_"min" (A) ), This new class of absolute value equations, the single value absolute matrix B is less than the single value matrix A and the MoreIn this paper, a new class of absolute value equations is studied as follows:Ax-B|x|-b=o, ( B≠I, σ_"max" (|B|)<σ_"min" (A) ), This new class of absolute value equations, the single value absolute matrix B is less than the single value matrix A and the matrix B is not exclusively the identity matrix..Therfore the power of choice is wider than other methods of the absolute value equations and all matrices are arbitrary and this new class of absolute value equation is the NP hard problem..We solve this new class using a generalized Newton method and also convergence and numerical stability. Also, by testing the numerical examples of the efficiency and effectiveness of the solution method for the new class, it has been studied with other works that have been done including Lotfi and Zainali and Mangasarain and Khaksars method.Eceptthis new class and Lotfi and Zainali method are quadratic convergence, the rest methods are linear convergence. Manuscript profile -
Open Access Article
4 - The role of financial components on the relationship between misevaluation of stock prices and innovation of listed companies using the mild transition regression (STR) model
yazdan goodarzi Leila BaratiIncorrect valuation refers to a situation in which the stock price of companies in the capital market differs from its intrinsic value. Incorrect valuation of companies in the capital market considered as a phenomenon that originates from the shortcomings of the capital MoreIncorrect valuation refers to a situation in which the stock price of companies in the capital market differs from its intrinsic value. Incorrect valuation of companies in the capital market considered as a phenomenon that originates from the shortcomings of the capital market. The purpose of this paper is to examine the role of stock issuance; Firm growth and stock turnover on the relationship between stock price misevaluation and firm innovation. The spatial domain of this research was the companies accepted in the Tehran Stock Exchange and the temporal domain was the years between 2013 and 2019. In this paper, the wrong valuation of the independent variable stock price and the innovation of the dependent variable company considered. In the data section, the research done by collecting the data of the sample companies by referring to the financial statements, explanatory notes and the stock exchange monthly. Based on the systematic elimination method, 147 companies selected as a statistical sample. In order to analyze the data, non-linear panel data method has been used. The results showed that the wrong valuation of the stock price has an effect on the innovation of the company, in addition to the issuance of shares; Company growth and stock turnover have a moderating role on the relationship between stock price misevaluation and company innovation. Manuscript profile -
Open Access Article
5 - Seignorage and Welfare Cost of Inflation in Iran
علیرضا مرادیAfter the monetarists' views of the importance of the role of money in inflation formation, stylized facts have emphasized on the fact that inflation has highest correlation with money supply variations. This statement is emphasized by many schools of macroeconomics. He MoreAfter the monetarists' views of the importance of the role of money in inflation formation, stylized facts have emphasized on the fact that inflation has highest correlation with money supply variations. This statement is emphasized by many schools of macroeconomics. Hence in adopting any monetary policies, reducing the welfare costs of inflation, should be targeted. But governments can make revenue from the monopolistic power of printing money, which is called Seignorage. In this paper, we have tried to estimate both Seignorage and welfare cost of inflation simultaneously. To do so, we have used Sidrauski-type model that in this model preference are separable functions of non-durable goods consumption and monetary holdings. From the practical aspects, this model is converted to nonlinear system of simultaneous equations; that should be estimated by using Generalized Method of Moments (GMM). Our empirical results indicated that, Seignorage does not exceed 2.74 percent of GDP and welfare costs of inflation increases with inflation. Maximum Seignorage is related to the year of 1372 and is equal to 2.675 percent of GDP and maximum welfare costs is about 3.041 percent of GDP and is related to the year of 1372. Manuscript profile -
Open Access Article
6 - Analyzing the Asymmetric Impact of Air Pollution on Per Capita Health Expenditure in Iran
abolghasem Mohammadian MansourIntroduction: Air pollution from different channels leads to weakening of health and increasing demand for health care, and as a result, increasing per capita health expenditure. On the other hand, it is possible that the impact of air pollution on health costs is asymm MoreIntroduction: Air pollution from different channels leads to weakening of health and increasing demand for health care, and as a result, increasing per capita health expenditure. On the other hand, it is possible that the impact of air pollution on health costs is asymmetric; In this sense, the effectiveness of health costs from increasing and decreasing the air pollution is not the same. Based on this, the main purpose of this study is to experimentally estimate the asymmetric effect of air pollution index on per capita health expenditure in Iran.Methods: The present descriptive-analytical and applied study using the time series data during the period of 1989-2020, investigated the short-term and long-term effects of positive and negative air pollution shocks, per capita income, dependency burden, and urbanization on per capita health expenditure. The data used were also collected from the Central bank of Islamic Republic of Iran database and World Development Indicators belonging to the World Bank. Also, the model was estimated in the form of a regression model using the Non-linear Auto-Regressive Distributed Lags (NARDL) method in Eviews 12.0 software.Results: The results show that in the short and long term, the effect of positive air pollution index shocks on the increase of health expenditure per capita is greater than the effect of its negative shocks on the decrease of health expenditure per capita (confirmation of asymmetric effect). With a one percent increase in CO2 emissions, in the long and short term, per capita health expenditure will increase by about 0.18 and 0.04 percent, respectively. On the other hand, with a one percent reduction in CO2 emissions, in the long and short term, per capita health expenditure will decrease by 0.06 and 0.01 percent, respectively.Conclusion: Considering that the effect of increasing shocks of air pollution on health costs is much greater than the effect of decreasing shocks, adopting policies and strategies to prevent the increase of air pollution emissions in the current period can help reduce future additional per capita costs in the health sector. Manuscript profile -
Open Access Article
7 - The Effect of Positive and Negative Public Health Expenditure Shocks during Business Cycles on Health Status in Iran
Azadeh Jahantabi Nejad abolghasem golkhandanIntroduction: The impact of positive and negative shocks or the asymmetric impact of public health expenditures during periods of recession and boom (business cycles) on health status is of particular importance in terms of making appropriate decisions in the field of c MoreIntroduction: The impact of positive and negative shocks or the asymmetric impact of public health expenditures during periods of recession and boom (business cycles) on health status is of particular importance in terms of making appropriate decisions in the field of controlling the vulnerability of the lower classes of society in these periods. Based on this, the main purpose of this study is to estimate the asymmetric effect of public health expenditures on the health status in Iran during periods of recession and boom. Methods: The present descriptive-analytical and applied study using the time series data during the period of 1979-2020, investigated the long-term effects of positive and negative public health expenditures shocks during business cycles, per capita income and physician per capita on the death rate of children under 5 years and life expectancy. Filtering approach and three filters HP, BK and CF have been used to identify business cycles. Also, the models were estimated in the form of a regression model using the Non-linear Auto-Regressive Distributed Lags (NARDL) method in Eviews 12.0 software.Results: The results show that the public health expenditure had a pro-cyclical behavior during the period under review. In the long-term, the effect of negative public health expenditure shocks during business cycles on weakening health indicators is greater than the effect of its positive shocks on strengthening health indicators (confirmation of asymmetric effect). Also, the impact of positive and negative shocks on public health expenditures during periods of economic recession is greater than during periods of economic boom. With a 1% decrease in public health expenditures during periods of economic recession, the death rate of children under 5 years increases by 0.17% and the life expectancy decreases by 0.13%.Conclusion: Based on the results of this research, it is recommended to increase public health expenditures during periods of economic recession in order to reduce the vulnerability of the lower classes of society. But, considering the pro-cyclical behavior of public health expenditures, it is necessary to adopt policies and solutions to reduce the intensity of this behavior. Manuscript profile -
Open Access Article
8 - Survey of Information seeking behavior of the IHCS members on the basis of Fosters nonlinear model
Ayoob Nazi Sakineh GhasempourPurpose: In recent decades, Information seeking behavior has been the subject of many studies and resulted different offered models; e.g., traditional, systematical, user-oriented, task-oriented and linear models. The main goal of this paper was to study Foster non-line MorePurpose: In recent decades, Information seeking behavior has been the subject of many studies and resulted different offered models; e.g., traditional, systematical, user-oriented, task-oriented and linear models. The main goal of this paper was to study Foster non-linear model as a new approach in contrast to previous offered models. Design/Methodology/Approach: This Survey research was conducted by a questionnaire that developed by the researcher based on existing criteria at the Foster’s thesis (2003). Total of 110 questionnaires were distributed and 105 of them were returned. Findings: The results showed different levels of correspondence in interdisciplinary and single-disciplinary researcher’s information-seeking behavior with Foster’s non-linear model in general and also with the contexts and triple core processes, too. The hypothesis test showed a significant difference in the the level of information seeking behavior matching between the two groups of studied researchers with the model. Conclusion: There is an essential need to review this model, especially in determining the weight and importance of each core processes and contexts in modeling the information seeking process. Manuscript profile -
Open Access Article
9 - Deficit irrigation simultaneously with reduced available water the solution to conservation of water resources in Qazvin plain
Abozar Parhizkari Mohammad Mahdi Mozaffari Mohsen Shokatfadaee Abolfazl MahmoodiIn the present study first the agricultural production functions was estimated based on three techniques of full irrigation and deficit irrigation 5 and 10 percent in order to presentation of the practical solution to conservation of surface and underground water MoreIn the present study first the agricultural production functions was estimated based on three techniques of full irrigation and deficit irrigation 5 and 10 percent in order to presentation of the practical solution to conservation of surface and underground water resources in Qazvin plain. The optimal amounts of cropping pattern were determined in Qazvin province by a non-linear programming model. Then, the effects of deficit irrigation was investigated on cropping pattern, water used and farmer’s gross marginal simultaneously with reduced available water under scenarios 10, 20, 30 and 40 percent. To estimating of the agricultural production functions was used Ordinary Least Squares method and Eviews software. The non-linear programming model was solved in GAMS software. The results of estimated production functions showed that deficit irrigation 5 percent creates a slight decrease in products yield. But, deficit irrigation 10 percent has the negative effect on yield of most products. The results of non-linear programming model showed although use of deficit irrigation 5 percent simultaneously with reduced available water policy creates the slight decrease in farmer’s gross marginal but this technique helps to maintain and sustainability of surface and underground water resources of Qazvin plain strongly. Manuscript profile -
Open Access Article
10 - Influence of Crop Pattern Correction on Reducing Fertilizer’s Effects of Agricultural Activities: A Case Study in Fars Province
Shahryar Nasabian Hamid Mohammadi Alireza KeikhaIn recent years, the increased effects of agricultural systems on the environment concerned scientistsand policy-makers in different countries. The indiscriminate use of chemical fertilizers and use ofexcessive ground water are included in these effects. Current study u MoreIn recent years, the increased effects of agricultural systems on the environment concerned scientistsand policy-makers in different countries. The indiscriminate use of chemical fertilizers and use ofexcessive ground water are included in these effects. Current study using a Multiple Goals Fuzzy Non-Linear Programming model, analyzed the possibility of ideals realization reducing consumption offertilizers and water in compromising with maximizing gross margin, minimizing risk of production,and increased social benefits goals in the crop pattern of three cities located in three major weatherRegions of Fars Province. Results showed that in many cases there isn't the possibility of completeideals realization in the multiple goals model in comparison with single goal patterns. But consideringthe outcome and the relevant weight assigned to each of the goals by the decision maker consisting ofthe Fuzzy Composite Distance Function, appeared that the crop patterns based on multiple goals aresuperior to current patterns and even single goal pattern in supply of multiple compromised ideals.Implementation of these models in study areas has significant influence on reducing water andfertilizer uses in addition increasing the gross margin, reducing risk and increasing employment oflabor in the region Manuscript profile -
Open Access Article
11 - Comparison of The LBM With the Modified Local Crank-Nicolson Method Solution of Transient Two-Dimensional Non-Linear Burgers Equation
AR. Haghighi S. Pakrou A. Dadvand -
Open Access Article
12 - Semi-analytical Method to Solve the Non-linear System of Equations to Model of Evolution for Smoking Habit in Spain
S. Noeiaghdam K. Kamal Ali -
Open Access Article
13 - Vibration Analysis of a Current-Carrying Wire in a Magnetic Field Apllying Variational Iteration Method
M. HosseiniIn the present investigation, Variational Iteration Method (VIM) is applied to solve the dynamic oscillation of a current-carrying wire in a magnetic field which is generated by a fixed current-carrying conductor parallel to the wire. Two linear springs are considered t MoreIn the present investigation, Variational Iteration Method (VIM) is applied to solve the dynamic oscillation of a current-carrying wire in a magnetic field which is generated by a fixed current-carrying conductor parallel to the wire. Two linear springs are considered to restrict the wire to a rigid wall. In a special case, the periodic solution of the problem is obtained by VIM and compared with numerical solutions for different parameters. Results indicate high accuracy of this method which can be easily extended to solve other non-linear vibration equations, therefore can be applicable in other engineering problems. Manuscript profile -
Open Access Article
14 - Numerical solution of the one dimensional non-linear Burgers equation using the Adomian decomposition method and the comparison between the modified Local Crank-Nicolson method and the VIM exact solution
AR. Haghighi M. Shojaeifard -
Open Access Article
15 - Modified homotopy perturbation method for solving non-linear oscillator's equations
A. R. Vahidi Z. Azimzadeh M. Shahrestani‎ -
Open Access Article
16 - A comparison of cardinal temperatures between haloxyfop R methyl ester- resistant and susceptible winter wild oat (Avena ludoviciana Durieu.) biotypes
Saeid Hassanpour Bourkheili Javid Gherekhloo Behnam Kamkar S. Sanaz RameznpourEvolution of resistance in weeds leads to induction of fitness cost. Five winter wild oat biotypes resistant to haloxyfop R methyl ester collected from Kalaleh Township located in Golestan province were evaluated along with the susceptible biotype in terms of variation MoreEvolution of resistance in weeds leads to induction of fitness cost. Five winter wild oat biotypes resistant to haloxyfop R methyl ester collected from Kalaleh Township located in Golestan province were evaluated along with the susceptible biotype in terms of variation in cardinal temperatures in the following study. The experiment was conducted at laboratories of Gorgan University of Agricultural Sciences and Natural Resources as completely randomized design with 4 replications each consisting of 25 seeds. Petri dishes containing seeds were incubated and monitored continuously at temperatures 5-40 °C (at 5°C intervals) following a 72 hours vernalization at 4°C. Non-linear regression models were used to quantify germination response to temperature. No notable difference was observed among winter wild oat biotypes and beta model at 50 percentile was the most suitable model to describe cardinal temperatures. Base, optimum and ceiling temperatures were estimated between -4.21 to -5.91, 23.37-23.94 and 36.99-37.54 °C, respectively. Thermal tolerance range of susceptible and resistant biotypes were not significantly different. Susceptible and resistant biotypes showed similar response. Lack of fitness cost regarding cardinal temperatures demonstrates that similar non-chemical management practices including early sowing may be implemented to control resistant and susceptible biotypes germination and emergence. Manuscript profile -
Open Access Article
17 - Two New Non-AFR Criteria for Depicting Strength Differential Effect (SDE) in Anisotropic Sheet Metals
F Moayyedian M Kadkhodayan -
Open Access Article
18 - The Attitude of Variation of Elastic Modules in Single Wall Carbon Nanotubes: Nonlinear Mass-Spring Model
A.R Golkarian M Jabbarzadeh -
Open Access Article
19 - Nonlinear Vibration Analysis of the Beam Carrying a Moving Mass Using Modified Homotopy
M Poorjamshidian J Sheikhi S Mahjoub-Moghadas M Nakhaie -
Open Access Article
20 - Delamination of Two-Dimensional Functionally Graded Multilayered Non-Linear Elastic Beam - an Analytical Approach
V Rizov -
Open Access Article
21 - Non-Linear Analysis of Asymmetrical Eccentrically Stiffened FGM Cylindrical Shells with Non-Linear Elastic Foundation
A.R Shaterzadeh K Foroutan -
Open Access Article
22 - The Modeling the Fixed Asset Investing with a Machine Learning Approach by Emphasizing the Role of Financial Criteria
Farzaneh SHamsdoost Omid Mahmoudi Khoshro Ataollah Mohammadi Malgharni Amir SheikhahmadiThe purpose of this research is to provide a growth model of fixed assets based on the financial criteria of companies admitted to the Tehran Stock Exchange. The current research is applied in terms of objective classification and descriptive-correlation in terms of met MoreThe purpose of this research is to provide a growth model of fixed assets based on the financial criteria of companies admitted to the Tehran Stock Exchange. The current research is applied in terms of objective classification and descriptive-correlation in terms of method. The research method is de-ductive-inductive. The statistical population of the current research is all the companies admitted to the Tehran Stock Exchange in the period from 2012-2021 and the financial information of 101 companies are use. Research hypotheses were tested using artificial intelligence algorithm. In this research, investment in fixed assets has been consider as a dependent variable, and financial criteria has been considered as primary independent variables. The results of research hypotheses testing using the methods of linear and non-linear algorithms of artificial intelligence PINSVR and KPLSR in predicting fixed asset investors of companies and by calculating the three errors criteria MAE, MSE and SMAPE in annual fixed assets. The asset forecasting in the next year of companies showed that the error difference between linear models and non-linear models is not so great that it can be claim that linear models are ineffective in predicting asset growth so that artificial intelligence algorithms are capable of predicting investment in company assets. Manuscript profile -
Open Access Article
23 - تعیین کیفیت آب در طول مسیر رودخانه با استفاده از شبکههای عصبی مصنوعی تکاملی (مطالعه موردی رودخانه کارون بازه شهیدعباسپور- عرب اسد)
محمد نیکو مهدی نیکو تیمور بابائی نژاد آزاده امیری قدرت الله رستم پوررودخانهها به عنوان اصلی ترین منبع تأمین کننده نیاز شرب، کشاورزی و صنعت از اهمیت خاصی برخوردار هستند. از طرفی کیفیت آب از لحاظ شرب نیز در بین پارامترهای کیفی مهم ترین متغیر میباشد. لذا بررسی و پیش بینی تغییرات پارامترهای کیفی در طول یک رودخانه، یکی از اهداف مدیران و بر Moreرودخانهها به عنوان اصلی ترین منبع تأمین کننده نیاز شرب، کشاورزی و صنعت از اهمیت خاصی برخوردار هستند. از طرفی کیفیت آب از لحاظ شرب نیز در بین پارامترهای کیفی مهم ترین متغیر میباشد. لذا بررسی و پیش بینی تغییرات پارامترهای کیفی در طول یک رودخانه، یکی از اهداف مدیران و برنامه ریزان منابع آب، میباشد. در این راستا تعداد زیادی مدلهای کیفیت آب، در زمینه مدیریت بهتر برای حفظ کیفیت آب، گسترش یافته است. در این میان مدلهای شبکه عصبی مصنوعی که با الهام از ساختار مغز بشر عمل مینمایند، به عنوان گزینهای برتر، مورد تحقیق و بررسی قرار میگیرد. این تحقیق بر روی رودخانه کارون، بزرگترین رودخانه کشور و با استفاده از پارامترهای اندازه گیری شده در ایستگاههای موجود در طول رودخانه (بازه شهیدعباسپور- عرب اسد) انجام شده است. بدین منظور، دبی، ماه، طول رودخانه و پارامترهدایت الکتریکی اندازه گیری شده در ایستگاههای شهیدعباسپور، پل شالو، گتوندو عرب اسد به عنوان ورودیهای مدل، در نظر گرفته شد. با استفاده از مدل شبکه عصبی، نسبت جذب سدیم (SAR) و کل املاح محلول (TDS) اندازه گیری شده در همان ایستگاهها نیز پیش بینی میگردد. از جمله مواردی که در این تحقیق به عنوان یک روش جدید استفاده شده است،تعیین شاخصهای کیفی آب، در چند ایستگاه به صورت هم زمان میباشد. به منظور بهینه کردن هرکدام ازمدلهای شبکه عصبی مصنوعی، از الگوریتم ژنتیک استفاده گردید. نتایج نشان میدهد که مدلشبکه عصبی مصنوعی انتخاب شده، نسبت به مدلهای آماری رگرسیون غیرخطی از توانایی، انعطاف پذیری و دقت بیشتری در پیش بینی کیفیت آب در رودخانه برخوردار میباشد. Manuscript profile -
Open Access Article
24 - Site effect and soil non-linear behavior in frequency domain in Northern region of Yazd city
Ahmad AdibIn this research, ground motion analysis and site effect were conducted in the north of Yazdcity using data from boreholes and accelerographs with regard to changes in frequency. Toestimate the soil non-elastic response and equivalent linear behavior of soil, an iterati MoreIn this research, ground motion analysis and site effect were conducted in the north of Yazdcity using data from boreholes and accelerographs with regard to changes in frequency. Toestimate the soil non-elastic response and equivalent linear behavior of soil, an iterativeloop was utilized. The first iteration was performed using shear modulus and attenuationratio with regard to the incoming stress-strain curves. The test was frequently repeated inorder to comply with the determined numerical requirement. Vibrations with the mostcritical resonance response were assumed as the highest probable damage mode in the area.To evaluate site effect in the north region of Yazd city, geotechnical data, down holeseismic profiles and historical seismic records of the region were used. The accelerationrecords of ground motion in bedrock for a 100 years return period in Shahediyeh andAmirabad boreholes that are used for this resarch work are 0.151g and 0.157g,respectively . Taking the above mentioned return period into consideration, for Shahediyehborehole the vaiues of resonance frequency and alluvium resonance ratio were measured as5.4 and 1.6, respectively. Similarly, for Amirabad borehole, these values are 5.8 and 1.7,respectively. On the basis of average resonance ratios and frequencies obtained from all themodels, the amplification of shear waves are intensified in frequencies between 5 to 6 Hzwith a resonance ratio of 1.6 Manuscript profile -
Open Access Article
25 - Application of Single Unit Impact Dampers in Protective Systems
Aref Afsharfard Mohammad GolmohammadiIn the present study, free vibration of a vibratory system equipped with an impact damper, which incorporates the Hertzian contact theory, is investigated. A nonlinear model of an impact damper is constructed using spring, mass and viscous damper. As a practical case st MoreIn the present study, free vibration of a vibratory system equipped with an impact damper, which incorporates the Hertzian contact theory, is investigated. A nonlinear model of an impact damper is constructed using spring, mass and viscous damper. As a practical case study, a five-story building is simulated in SimMechanics toolbox of MATLAB software. Performance of the impact dampers to suppress structural vibrations of the structure is studied. It is shown that the impact dampers can effectively suppress undesired vibrations of all of the building floors.. For quenching vibrations, in order to show the ability of impact dampers , the so-called "effectiveness" is introduced. Finally, it is shown that the impact damper can increase the effectiveness up to 34 percents. Manuscript profile -
Open Access Article
26 - Asymmetric effects of changes in liquidity volume on the added value of transportation, warehousing and communication
مهناز حاله کامبیز هژبرکیانی فرید عسگری محمدصادق علیپورAbstractOne of the important and effective success factors in development planning is the knowledge of the structure and potential of different sectors in the economy. Transportation, warehousing and communication sub-sectors are among the sectors of the country's econo MoreAbstractOne of the important and effective success factors in development planning is the knowledge of the structure and potential of different sectors in the economy. Transportation, warehousing and communication sub-sectors are among the sectors of the country's economy, which have a significant share in the gross national product, and therefore, the factors affecting its added value should be considered by economic policy makers. On the other hand, in the direction of formulation and macro-economic decisions, the amount and direction of influence (symmetry or asymmetry) of monetary policies, including changes in the volume of liquidity, on macro-variables has always been the concern of economic policymakers. Therefore, in the upcoming study, we will dynamically examine the direction and degree of influence of the added value of the transportation, warehousing and communication sub-sector from asymmetric changes in the volume of liquidity using time series data annually during the period 1363 to 1398 and for For this purpose, the autoregression model with non-linear distribution breaks and the edge test approach have been used. The results show that there is a long-term relationship (collinearity) between the variables of the model, and the shocks of changes in the volume of liquidity in the studied model have an asymmetric effect and have larger coefficients in the long run. Based on other research results, the interest rate of bank loans on the added value of this sub-sector is positive and significant, and the elasticity of the added value of the mentioned sub-sector in the investigated model is higher than the interest rate of bank loans in relation to the changes in the volume of liquidity in the short and long term. Manuscript profile -
Open Access Article
27 - Using Tracking Differentiators in Designing Nonlinear Disturbance Observers for Uncertain Systems
Nasser Kazemzadeh Saeed Barghandan -
Open Access Article
28 - Designing an integrated production/distribution and inventory planning model of fixed-life perishable products
Javad Rezaeian keyvan Shokoufi Sepide Haghayegh Iraj Mahdavi -
Open Access Article
29 - Production Constraints Modelling: A Tactical Review Approach
Chinedum Mgbemena Emmanuel Chinwuko Henry Ifowodo -
Open Access Article
30 - Presentation and Solving Non-Linear Quad-Level Programming Problem Utilizing a Heuristic Approach Based on Taylor Theorem
Eghbal Hosseini -
Open Access Article
31 - An Integrated Approach of Fuzzy Quality Function Deployment and Fuzzy Multi-Objective Programming Tosustainable Supplier Selection and Order Allocation
Amir Hossein Azadnia Pezhman Ghadimi -
Open Access Article
32 - Using Electromagnetism Algorithm for Determining the Number of kanbans in a Multi-stage Supply Chain System
Majid Khalili Mohammad Jafar Tarokh Bahman Naderi -
Open Access Article
33 - Evaluation of Torsional Single Story Structure During Earthquake According to Canadian provision
Seiyed Ali Haj Seiyed Taghia Masoud Ebrahimi Abdoulreza Sarvghad Moghadamc -
Open Access Article
34 - Performance Evaluation of Viscoelastic and Friction Passive Damping System in Steel Structures
Mohammad Taghi Kazemia Hosein Hoseini -
Open Access Article
35 - Seismic Performance of Torsionally Stiff and Flexible Single Story Buildings Designed Based on Iranian Seismic Code(Standard 2800)
Seiyed Ali Haj Seiyed Taghia A.S. Moghadam -
Open Access Article
36 - A Comparison of Different Non-linear Numerical Models for Pier Shaft Interaction Analysis for study of the Seismic Performance of Bridges
Shahriar TavousiTafreshi Amin Ghafooripour Seyed shahrum Jafari -
Open Access Article
37 - Evaluating of height-diameter nonlinear models for Alnus specie in Hyrcanes forest (Case Study: Golestan Rezaeian Forest)
anoshirvan alemi jafar oladi asghar fallah yaser maghsoudiProjection of stand development over time relies on accurate height-diameter functions. In this study, we evaluated the capability of 43 nonlinear models to estimate Alnus subcordata heights in a portion Rezaeian experimental forest in Gorgan, Golestan province. We appl MoreProjection of stand development over time relies on accurate height-diameter functions. In this study, we evaluated the capability of 43 nonlinear models to estimate Alnus subcordata heights in a portion Rezaeian experimental forest in Gorgan, Golestan province. We applied a systematic random sampling method to collect field data within a 150×200 meter network (3.33% intensity). It resulted in 200 circular plots with 17.84 m (0.1 ha) radius. In each plot tree species, height and diameter at breast height (DBH) of all trees with DBH>7.5 cm were measured. From the available dataset, we included 70% in the model development and the remaining 30% to validate the models. The relationship between height (dependent variable) and DBH (independent variable) was analyzed using 43 non-linear regression models. The results showed no significant difference between the applied model diagnostics, and the applied t-test showed non-significant mean stand height estimation using all models and actual height at 99% confidence level. In addition, the results of Geometric, Geometric two, Hyperbolic three, Morgan-Merser-Florin and Logarithmic models with R2 of 0.88 and RMSE% of 7.81%, 7.86%, 7.88%, 7.90 and 7.92% , respectively were almost similar in that they were better predictors of forest height. Based on the results, we conclude that these models can be used for predicting forest height in similar broadleaved stands of northern Iran, provided that comparative studies are conducted elsewhere to approve the results obtained here. Manuscript profile -
Open Access Article
38 - OPF-Based Optimal Location of Two Systems Two Terminal HVDC to Power System Optimal Operation
Mehdi Abolfazli Afshin Lashkarara Ahad Kazemi Seyed Ali Nabavi NiakiIn this paper a suitable mathematical model of the two terminal HVDC system is provided for optimal power flow (OPF) and optimal location based on OPF such power injection model. The ability of voltage source converter (VSC)-based HVDC to independently control active an MoreIn this paper a suitable mathematical model of the two terminal HVDC system is provided for optimal power flow (OPF) and optimal location based on OPF such power injection model. The ability of voltage source converter (VSC)-based HVDC to independently control active and reactive power is well represented by the model. The model is used to develop an OPF-based optimal location algorithm of two systems two terminal HVDC to minimize the total fuel cost and active power losses as objective function. The optimization framework is modeled as non-linear programming (NLP) and solved by Matlab and GAMS softwares. The proposed algorithm is implemented on the IEEE 14- and 30-bus test systems. The simulation results show ability of two systems two terminal HVDC in improving the power system operation. Furthermore, two systems two terminal HVDC is compared by PST and OUPFC in the power system operation from economical and technical aspects. Manuscript profile -
Open Access Article
39 - Novel Control Strategy for VSI and CSI Active Filters and Comparing These Two Types of Filters
Gholam Reza Arab Somayeh Yarahmadi Jafar SoltaniRecently to eliminate the harmonics and improve the power factor of the power networks, much attention has been attracted to active filters. The advantages of these filters are lower volume and their better compensating characteristics than the passive filters. In conve MoreRecently to eliminate the harmonics and improve the power factor of the power networks, much attention has been attracted to active filters. The advantages of these filters are lower volume and their better compensating characteristics than the passive filters. In conventional sliding mode controllers, the source current waveform is fluctuated in near to zero values. In this paper, using a new sliding technique, lower Total Harmonic Distortion (THD) in source current is obtained and the current waveform is improved. As well as, two novel control strategies for two types of active filters, VSI and CSI is proposed and then these two types of filters are compared to reduce THD value of source current.The proposed controlled strategies are simulated by MATLAB/Simulink. The Simulation results confirm that the proposed strategies reduce the THD of source current more than other strategies, and active filter based on CSI has a better performance than active filter based on VSI with a dead time area (for avoiding short circuit of the source) in high powers. Manuscript profile -
Open Access Article
40 - The Investigation Effect of Viscous Damper on the Floor level on Seismic Response at Reinforced Concrete Tall buildings with Internal Resistant Core the Tube in Tube System
sajjad Alizadeh ashkan khodabandelouApplication of dampers as means of attenuation of earthquake energy is one of the most significant approaches and viscose damper is the most popular one. The aim of this paper was to investigate the effect of viscose dampers on decreasing the vulnerability of tall struc MoreApplication of dampers as means of attenuation of earthquake energy is one of the most significant approaches and viscose damper is the most popular one. The aim of this paper was to investigate the effect of viscose dampers on decreasing the vulnerability of tall structures at earthquake and selection of the optimal arrangement of dampers in these structures. so, two types of concrete special moment frames with central cores with 26 floors were designed with SAP2000 software. Then, they were applied to five earthquake records and their vulnerabilities were investigated according to non-linear timehistory dynamic analysis. Then, dampers were erected into the structure and modeled. To do so, the dampers were horizontally positioned in the structure and the models were evaluated again using non-linear timehistory dynamic analysis. The results obtained by investigating three parameters of maximum Floor displacement, base shear, and structure Acceleration verified signified decrease in all three parameters. In such a way that the displacement of the structure, between 10 to 25 percent,the base shear 15 percent, as well as the acceleration of the input to the structure, to about 17 to 20 percentage reduction. Manuscript profile -
Open Access Article
41 - Investigation of Changing the Dimensions of the Connecting Parts of Beam-to-column Semi-rigid Connections on the Behavior and the Rigidity Percentage of this Connection
ALI DELNAVAZ amirhosein mollaeskandari Structural analysis is very complicated in terms of actual behavior of its connections, and for this reason, by employing the concept of the beam line, certain stiffness is attributed to each connection and thus the connections are categorized. More Structural analysis is very complicated in terms of actual behavior of its connections, and for this reason, by employing the concept of the beam line, certain stiffness is attributed to each connection and thus the connections are categorized. In this research, a semi-rigid connection with stiffener plates is considered in the connection between a beam web and a column. For this purpose, 64 analytical models are utilized, in which the features of stiffener plates, such as height, width, and thickness are changed. There are four variable modes for height, four variable modes for widths, and four variable modes for thickness, making a total of 64 different models. The connections were modeled under a nonlinear static analysis and then the momentum-rotation diagrams were plotted for each mode. So that, the behavior of the semi-rigid connection and the impact of the connecting plates on its performance was investigated. Finally, by comparing the results, a relationship was provided for estimating the rigidity percentage of a semi-rigid connection Manuscript profile -
Open Access Article
42 - Analysis of Behavior of Concrete Gravity Dams with Different Water Level Subjected to Earthquake Loading
parviz sabeti ahmad malekiThe design and evaluation of concrete gravity dams will be studied in the present study. The case study consists of a comparison between old research methods and new ones. In the present case, an analysis of concrete gravity dams with different water levels influenced b MoreThe design and evaluation of concrete gravity dams will be studied in the present study. The case study consists of a comparison between old research methods and new ones. In the present case, an analysis of concrete gravity dams with different water levels influenced by earthquake will be presented. The subject of the study is a concrete gravity dam project by Rolling Compact Concrete (R.C.C), which is to be located 30 kilometers away from the South East of Sanandaj named Jaweh. It would be the second R.C.C dam made in Iran. The data used in the study is collected from detective. One of the investigation methods is a simplified one by Chopra and Feneves, which is based on a pseudo dynamic method. The new investigation method is conducted on the basis of finite element. Abaqus and Cadam Softwares are based on finite element method as well. This essay investigates the effect of linear behavior of concrete gravity dam with different water levels on rigid and flexible foundation. Afterwards the effect of non-linear behavior of concrete gravity dam on tensil cracking will be investigated and cracking seems directions will be studied by three earthquake accelerators. Manuscript profile -
Open Access Article
43 - بررسی مقایسه ای بهینه سازی ازدحام ذرات و الگوریتم ژنتیکی کاربردی برای بهینه سازی مسائل نویز غیر خطی
Hossein Towsyfyan امین کلاه دوز Hazem Esmaeel Shahed MohammadiOptimization of noisy non-linear problems plays a key role in engineering and design problems. These optimization problems can't be solved effectively by using conventional optimization methods. However, metaheuristic algorithms such as Genetic Algorithm (GA) and Partic MoreOptimization of noisy non-linear problems plays a key role in engineering and design problems. These optimization problems can't be solved effectively by using conventional optimization methods. However, metaheuristic algorithms such as Genetic Algorithm (GA) and Particle Swarm Optimization (PSO) seem very efficient to approach in these problems and became very popular. The efficiency of these methods against many new metaheuristic optimization algorithms has been proved in previous works, however a robust comparison between GA and PSO to solve noisy nonlinear problems has not been reported yet. Therefore, in this paper GA and PSO are adapted to find optimal solutions of some noisy mathematical models. Based on the obtained results, GA shows a promising potential in terms of number of iteration to converge and solutions found so far for either for optimization of low or elevated levels of noise. Manuscript profile -
Open Access Article
44 - A REVIEW ON SEQUENCING APPROACHES FOR MIXED-MODEL JUST-IN-TIME PRODUCTION SYSTEM
Tanka Dhamala Shree Khadka -
Open Access Article
45 - مدلسازی رشد و آنالیز ژنتیکی روی صفات رشد بز Sirohi تحت شرایط مزرعه
ل. گاوتام ر.آ. کومار ناگدا ه. اشرف وایزدادههای روی 6772 رکورد رشد بزهای Sirohi نگهداری شده در تمامی مراکز تحقیقاتی هماهنگ شده بز Sirohi هند در ایستگاه تحقیقاتی دامهای اهلی، والابهنگار، اودایپور، هند، و رکوردگیری شده بین 2004 و 2016، برای مطالعه صفات رشد مرتبط و کنترل ژنتیکی آنها آنالیز شدند. بهطور کلی میا Moreدادههای روی 6772 رکورد رشد بزهای Sirohi نگهداری شده در تمامی مراکز تحقیقاتی هماهنگ شده بز Sirohi هند در ایستگاه تحقیقاتی دامهای اهلی، والابهنگار، اودایپور، هند، و رکوردگیری شده بین 2004 و 2016، برای مطالعه صفات رشد مرتبط و کنترل ژنتیکی آنها آنالیز شدند. بهطور کلی میانگینهای حداقل مربعات وزن بدن در تولد، 3 ماهگی، 6 ماهگی، 9 ماهگی، 12 ماهگی به ترتیب 0.03 ± 2.34، 0.19 ± 12.44، 0.22 ± 16.31، 0.47 ± 20.08 و 0.40 ± 25.09 کیلوگرم، بودند. اگرچه میانگینهای حداقل مربعات برای میانگین رشد روزانه پیش و پس از شیرگیری 2.15 ± 1113.66 و 0.94 ± 46.17 گرم / روز، به ترتیب بودند. فاکتورهای غیر ژنتیکی گوناگون اثرات متغییری روی صفات رشد در فازهای متفاوتی از سن نشان دادند. خوشه و دوره تولد اثر معنیداری روی تمامی صفات رشد داشت. فصل تولد اثر معنیداری داشت به­ جز وزن تولد. بزغالههای متولد شده تابستان وزن بدن بیشتر و سنگینتر و رشد پیش و پس از شیرگیری نسبت به بزغالههای متولد شده در زمستان و فصل بارانی داشتند. نرها وزن بیشتر و رشد روزانه بیشتر نسبت به مادهها در تقریباً همه مراحل رشد داشتند. بزغالههای نخستین مادرها وزن تولد کمتری معنیداری در مقایسه با بزغالههای مادران چند شکم داشتند. بزغالههای متولد شده منفرد مزیت متمایزی نسبت به آنهایی که چندقلو متولد شده بودند در تمامی صفات رشد داشتند. تابعیت رویوزن مادر در بزغالهزایی برای تمامی مراحل صفات رشد مثبت معنیدار بودند. وراثتپذیری برآورد شده تمامی اوزان بدن و رشدهای وزنی در مراحل متفاوت از رشد متوسط بودند (0.28-0.16)، به ­جز برای متوسط رشد روزانه پس از شیرگیری، که وراثتپذیری پایینی داشت (0.01±0.07). همبستگیهای ژنتیکی و فنوتیپی در میان صفات متفاوت رشد مثبت و بالا بود، به­جز برای همبستگی فنوتیپی بین رشدهای پیش و پس از شیرگیری که منفی بود. برای مدلهای رشد غیر خطی، viz، Gompertz، Brody، Logistic و Von Bertalanffy برای توضیح الگوی رشد در بزغالههای Sirohi براساس پارامترهای رشد استفاده شدند. بیشترین مقدار R2و ارزشهای کمترین خطای مطلق میانگین (MAE)، معیار اطلاعاتی آکائیک (AIC) و درصد خطای مطلق میانگین (MAPE) در مدل Brody مشاهده شدند. Manuscript profile -
Open Access Article
46 - مقایسه رشد بزغالههای نر و ماده ناندسکریپت در یک منطقه نیمه خشک نیجریه
A.O. Raji L.G. Asheikh I.D. Mohammedاین مطالعه کاربرد پنج مدل مختلف برای توصیف رشد بزغالههای دو جنس نر و ماده ناندسکریپت از تولد تا 20 هفتگی را مقایسه میکند. تعداد پنجاه و نه (59) بزغاله ناندسکریپت در مزرعه آموزشی و تحقیقاتی دانشگاه مایدوگوری نیجریه به طور هفتگی توزین شدند و مدل سازی بر اساس وزن زنده صو Moreاین مطالعه کاربرد پنج مدل مختلف برای توصیف رشد بزغالههای دو جنس نر و ماده ناندسکریپت از تولد تا 20 هفتگی را مقایسه میکند. تعداد پنجاه و نه (59) بزغاله ناندسکریپت در مزرعه آموزشی و تحقیقاتی دانشگاه مایدوگوری نیجریه به طور هفتگی توزین شدند و مدل سازی بر اساس وزن زنده صورت گرفت. متغیرهای بیولوژیکی مربوطه برای هر بزغاله از طریق مدلهای لجستیک، گمپرتز، ریچاردز، مونو مولکولی و مدل وایبل برآورد شد. مدلها با استفاده میزان انطباق معیارهای ضریب تعیین (R2)، میانگین مربع خطا (MSE)، انحراف معیار (SD) و معیارهای اطلاعات آکائیک (AIC) مقایسه شدند. در هر دو جنس، همه مدلهای غیر خطی به خوبی برازانده شدند، با R2 در دامنه 911/0-943/0 و 923/0-95/0 به ترتیب برای نر و ماده بود. علاوه بر این، نرها وزن تقریبی بالاتری در مقایسه با مادهها داشتند در حالیکه عکس آن در مورد نرخ رشد مشاهده شد. بزغالههای نر وزن عطف سنگین تر و سن بالاتر از مادهها برای تمام مدل داشتند. با این حال، این مقادیر برای مدل لجستیک بیشتر از گومپرتز بود. مدل تک ملکولی R2 بالاتر و MSE، SD و AIC پایینتر در هر دو جنس نر و ماده داشت. میتوان نتیجه گرفت که مدلهای رشد غیر خطی برای برآورد وزن زنده به عنوان تابعی از سن برای هر دو جنس نر و ماده بزغالههای ناندسکریپت در نیجریه مناسب بود. با این حال، بهترین مدل تک مولکولی بر اساس فراسنجههای مدل و میزان انطباق معیارهای مناسب بود. Manuscript profile -
Open Access Article
47 - Operational Conditions of Micronized Maize Grains Assessed by Modeling Ruminal in vitro Gas Production Data and Three Steps Method
R. Samsami A. Rohani V. Heidarian Miri س.ه. ابراهیمی -
Open Access Article
48 - A multi-objective inventory model for deteriorating items with backorder and stock dependent demand
A.H Sarfaraz S Alizadeh Noghani S.J Sadjadi M.B Aryanezhad -
Open Access Article
49 - Performance of Steel Beams Strengthened by Steel Pre-Stressed Cables and Memory Alloys under Static and Dynamic Loads
reza dadkhah tehrani Davoud Tavakoli -
Open Access Article
50 - Hysteretic Dissipators Made Of Aluminium And Steel: Optimal Design And Preliminary Characterization Tests
Mariella Diaferio Dora Foti Riccardo Nobile -
Open Access Article
51 - Using Smooth Transition Regression (STR) to predict Business Cycles
Harmony Shahmoradi Hamid Abrishami Oranus ParivarForecasting business cycles is very important in macroeconomic and it is an important part in process of economic decision-making and policy. In recent years, non-linear models have been considered more for forecasting economic variables and application of these models MoreForecasting business cycles is very important in macroeconomic and it is an important part in process of economic decision-making and policy. In recent years, non-linear models have been considered more for forecasting economic variables and application of these models has been made a significant improvement in modeling of the behavior of variables in the area of macroeconomic and particularly financial economics. This article provides a convenient and powerful model for forecasting business cycles by using smooth transition regression (STR). The results show that very little error that indicates model performance is acceptable. Manuscript profile -
Open Access Article
52 - Predictability Test of Stock Market Price Index in Iran Investment Market and comparing Linear and Nonlinear models predictability potentials
Karim Emami Ghodratollah EmamverdiSince the highly complicated Time Series such as Stock Market Prices are usually stochastic, their changes are assumed to be unpredictable. Some tests which have been used to study the statistical observations related to the economical variables e.g. Stock Market Price, MoreSince the highly complicated Time Series such as Stock Market Prices are usually stochastic, their changes are assumed to be unpredictable. Some tests which have been used to study the statistical observations related to the economical variables e.g. Stock Market Price, are often go wrong while encountering the chaotic data and recognize them as stochastic ones, though these data are actually generated from the deterministic systems which bear few tribulations. For this reason the predictable and non-linear tests such as HURST, BDS, Runs Test, and Correlation Dimension have been used to study the existence of deterministic chaotic trend and non-linear process in Time Series of Daily Stock Market Price Index of TEHRAN STOCK EXCHANGE from 23 rd October, 2000 to 24 th September, 2002. The result of the above mentioned tests shows the predictability and the existence of a non-linear process in the sample data. After the illustration of predictability and the non-linear process in daily stock index data, then the linear time series models (AR), non-linear (GARCH) and Artificial Neural Network (ANN) have been estimated to present a suitable model for predicting the Stock Price Index. Comparing the potential of predictability of these models by such criteria as: CDC, RMSE, MAE, MAPE and U-THEIL inequality coefficient, it has been revealed that there is the highest potential of predictability in Artificial Neural Network models than the other ones Manuscript profile -
Open Access Article
53 - A High Order Sliding Mode Controller Design for the Quadruple Tank Process with a Time Delay Compensator in The Presence of Uncertainties
Davood Ansari Mehdi Siahi Mohammad Komareji -
Open Access Article
54 - A Consistent and Accurate Numerical Method for Approximate Numerical Solution of Two Point Boundary Value Problems
Pramod Pandey -
Open Access Article
55 - A Three-Point Iterative Method for Solving Nonlinear Equations with High Efficiency Index
Mohammed waziri Yusuf Kabir Saminu -
Open Access Article
56 - Adsorption of Copper (II) Ions on a Montmorillonite Clay and its Application as Heterogeneous Catalyst for Knoevenagel Condensation Reaction
Hanane Essebaai zakaria Benzekri Houda Serrar Ahmed Lebkiri Said Boukhris Said Marzak ElHousseine Rifi -
Open Access Article
57 - Stress analysis of non-linearly variable thickness rotating disk in gas turbine engine using hyper-geometric method
Behrooz Shahriari Nedasadat Seddighi