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Open Access Article
1 - Calculating and analyzing total factor of productivity growth in agriculture crop sector with ARDL method
علي باقرزادهToday all countries are seeking to achieve high productivity. This means that they can achieve more production with fewer resources. Productivity has an important and effective role in increasing production and growth in sectors of economy. Through calculating and analy MoreToday all countries are seeking to achieve high productivity. This means that they can achieve more production with fewer resources. Productivity has an important and effective role in increasing production and growth in sectors of economy. Through calculating and analyzing the indicators of productivity the efficiency of various economic sectors can be reviewed. In this study with a Solow residual and lag model, total factor productivity growth in agricultural production during the period 1387 - 1358 were calculated. For this purpose, the Agriculture crop sector production function with capital, labor and energy was estimated using the ARDL approach. Then, using the index of Solow, TFP growth in agriculture crop sector was calculated. The results showed that total factor productivity growth in agriculture crop sector had experienced periods of high volatility. So that the average period of 0.8 percent. The mean total factor productivity growth in crop sector of agriculture , with the figure predicted in the fourth program (2.2) are of significant difference. It is suggested that the cycle of productivity policy should be done, to increase TFP in this sub-sector of agriculture. Manuscript profile -
Open Access Article
2 - Semi-analytic algorithms for the electrohydrodynamic flow equation
Ram K Pandey Vipul K Baranwal Chandra S Singh Om P Singh -
Open Access Article
3 - Any non-decreasing sequence of non-negative numbers can be the convergence curve of the DGMRES method
Malihe Safarzadeh Hossein Sadeghi GougheryInvestigating the convergence of the Krylov subspace methods has been considered as one of the favorite subjects in the field of numerical linear algebra. Given that the DGMRES method is a Krylov subspace methods, there is not much work to be done on its convergence. In MoreInvestigating the convergence of the Krylov subspace methods has been considered as one of the favorite subjects in the field of numerical linear algebra. Given that the DGMRES method is a Krylov subspace methods, there is not much work to be done on its convergence. In this article we will discuss parts of the convergence of this method. We show that for any non-decreasing sequence of negative numbers f(0)≥f(1)≥⋯≥f(m-1)>f(m)=⋯=f(n)=0, he set of {λ_1,…,λ_m,0,…,0} of the complex numbers and the arbitrary number α≤n-m can be a set of singular linear equations n×n, Ax=b with the index α and the set {λ_1,…,λ_m,0,…,0} as the spectrum of matrix A such that if the DGMRES method is used to solve this system, assuming ‖A^α r_0 ‖_2=f(0)‖_2 = f (0), for k=1,…,m-1, the k^th residual vector is ‖A^α 〖r 〗_k ‖_2=f(k), wherer_0=b-Ax_0 is the initial residual vector. We attempt to do this by constructing the complete coefficient matrix of the system (s). Manuscript profile -
Open Access Article
4 - Intellectual Capital Effects by Satisfactory Design on Financial and Economic Performance of Malaysian Companies
Payam Mojtahedi -
Open Access Article
5 - An Application of Discounted Residual Income for Capital Assets Pricing by Method Curve Fitting with Sinusoidal Functions
G. Talebnia M. Ebrahimi A. Darvishi -
Open Access Article
6 - Economic valuation of damages to residual trees due to logging operations in Chafroud Forests of Guilan province
Farshad Keivan Behjou Zeynab Pour-GholiThe aim of this research was the introducing a method to convert technical data of logging operation damages to economic value to express the investment for improving logging operation. This study was carried out in parcels 228, 231 and 232 in Chafroud Shanderman waters MoreThe aim of this research was the introducing a method to convert technical data of logging operation damages to economic value to express the investment for improving logging operation. This study was carried out in parcels 228, 231 and 232 in Chafroud Shanderman watershed- Guilan. After selecting the sample trees, the condition and quality of residual trees after felling and skidding were investigated. The technical data to be converted and then were the economic value (Rials) using opportunity missed and replacement cost methods. The market value of different wooden products was used to measure the value per cubic meter of extracted wood in the Caspian forests of Iran. After that, felling and skidding average cost per cubic meter was subtracted from wood value. The results indicated that selective cutting can damage the residual trees to value of 947385000 Rials (6072981Rials/ha) due to the forest logging operations. Therefore, the current logging operations also need to be accompanied with careful monitoring by operation personnel and investigated the site status after the logging operations. Manuscript profile -
Open Access Article
7 - Assessment of Microbial Quality and Chlorimetry of Drinking Water of the Abadeh City During 2015-2016 and Comparison with the National and WHO Standards
Leila Nematollahi haniyeh nowzariBackground and Objective: Water quality is one of the issues that are directly related to the health and personal and public health of the society, and monitoring the water and providing its health conditions is of great importance. Therefore, the aim of this study was MoreBackground and Objective: Water quality is one of the issues that are directly related to the health and personal and public health of the society, and monitoring the water and providing its health conditions is of great importance. Therefore, the aim of this study was to determine the microbial quality of drinking water in Abadeh in 2015 and to compare its quality with national standards and the World Health Organization (WHO). Method: In this study, 122 water samples for microbial measurement and 3864 water samples for chlorimetry were analyzed from water network of Abadeh city during 2015-2016. Multiple tube fermentation method and colorimetric method were used to determine fecal and total coliform bacteria and residual chlorine, respectively. Finally, all data were analysed by one sample T-test, Chi-Square, Mann-Withney, Kruskal-Wallis and Pearson Correlation Matrix. Findings: The results showed that the total coliform was 0 MPN/100ml in 98.36% of all samples and the fecal coliform was 0 MPN/100ml in 100% of all samples by microbial analysis and the residual chlorine were desirable in 78.0% of the samples and meet the expectations of national and international standards. Winter and summer showed the lowest and greatest amount of residual chlorine, respectively. On the other hand, the results showed significant negative associations between the amounts of the residual chlorine of the water with the presence of coliform bacteria in the water. Discussion and Conclusion: The microbial index of drinking water of the Abadeh city is lower than the standard limit of the WHO microbial Index and the national standard. As a result, the quality of drinking water of the city is desirable. Manuscript profile -
Open Access Article
8 - Option Hedging in Jump-Diffusion Markets by Malliavin Calculus
Minoo Bakhsh Mohammadlou Rahman FarnooshWe obtain the hedging strategy in a jump-diffusion market by minimizing the variance of the residual risk. We calculate the residual risk by two formulas: the Ito's formula and the jump-diffusion version of the Clark-Ocone formula. The results show that Malliavin calcul MoreWe obtain the hedging strategy in a jump-diffusion market by minimizing the variance of the residual risk. We calculate the residual risk by two formulas: the Ito's formula and the jump-diffusion version of the Clark-Ocone formula. The results show that Malliavin calculus can generate the hedging strategy under weaker assumptions. Thus afterward we do not require to check the strong condition on and the condition with bounded derivative is sufficient. Manuscript profile -
Open Access Article
9 - The Effect of Net Financial Expenses on the Company’s Value Using Residual Income Model in the Capital Market
Mohammadhossein Setayesh Mohammad Kiamehr Gholamreza HajizadehThis study is conducted to examine the relationship between the financial expenses and the companies’ value in Tehran Stock Exchange (TSE). For this purpose, net profit in residual income model is divided into two groups including operating profit and net financia MoreThis study is conducted to examine the relationship between the financial expenses and the companies’ value in Tehran Stock Exchange (TSE). For this purpose, net profit in residual income model is divided into two groups including operating profit and net financial expenses. The data collected from 122 companies listed in TSE was examined using multivariate regression model. The results of the study indicated a significant relationship between the stock price of the companies listed in TSE and earnings per share, book value per share and operating profit per share. However, no significant relationship was found between the stock price and the net financial expenses. Considering the lack of relationship between the stock price and the financial expenses, it is suggested to use residual operating profit model instead of residual income model in evaluating the companies. Furthermore, with regard to the fact that most of the financial items are reported in balance sheet with their fair value, it can be said that the results of this investigation is fully consistent with Penman’s idea that “the items which are reported with the fair value in the balance sheet will be irrelevant in the companies’ evaluation. Manuscript profile -
Open Access Article
10 - The Impact of Income Management on the Performance of Shares Valuation Models
Ali BaghaniChoosing a suitable method for stock assessment can be responsive to the needs of investors in determining the fair value of the stock. But the question is whether earnings management can affect performance evaluation models? In order to answer this question, In this s MoreChoosing a suitable method for stock assessment can be responsive to the needs of investors in determining the fair value of the stock. But the question is whether earnings management can affect performance evaluation models? In order to answer this question, In this study hypotheses regarding the impact of earnings management on the performance evaluation model based on Residual income and based on discounted cash flow in the two – year short term periods and seven –year long term periods were developed. This study, which was performed by the correlation analysis, by using regression analysis and Means Comparison test, tries to provide the possibility of the optimal model selection for investors. The population of this study is Companies listed on the Stock Exchange which has been active in the period of 1379-1390 years. The results indicate that in the short-term horizon, earnings management hasn't a significant effect on the predictive ability of the listed evaluation models. But in the long-term time horizon Income smoothing has a significant effect on the evaluation models’forecast error, and in the long-term timescales Residual income model has Lower prediction error. Manuscript profile -
Open Access Article
11 - Comparing the Behavioral Model of Stock Images with Traditional Models in estimating Stock values of Companies Listed on Tehran Stock Exchange
Gholamreza Askarzadeh Maryam Khaliliaraghi Hashem Nikoomaram F. RahnamayeRoodposhtiInvestors' objective of investing in stocks is gaining profit and reasonable return .Using behavioral model of stock image and traditional models (free cash flow of equity, discounted dividends and residual income), this research tries to present a framework for estimat MoreInvestors' objective of investing in stocks is gaining profit and reasonable return .Using behavioral model of stock image and traditional models (free cash flow of equity, discounted dividends and residual income), this research tries to present a framework for estimating stock values of companies and assess the performance of each of them in stock valuation of companies. In this regard, 95 manufacturing and industrial companies listed on the Tehran Stock Exchange were selected. The study period was from 2009 to 2013. The models performance was compared based on explanatory power and accuracy using panel data technique and prediction errors respectively. The results of research show that the behavioral model of stock image is higher explanatory power and accuracy compared to traditional models in estimating of stock values. The behavioral model can explain the role of behavioral factors in stock pricing and helpful for stockholders in the active portfolio management. Manuscript profile -
Open Access Article
12 - روش پوچسازی موضعی و برخی مسایل سخت
A. Abdollahi E. Babolianدر این مقاله یک روش عددی جدید برگرفته از روش هم­محلی، برای حل عددی مسایل مقدار اولیه سخت و معادلات انتگرال فردهلم نوع اول مبتنی بر مشتقات تابع مانده ارایه شده است؛ سپس تحلیل خطای این روش عددی با ارایه کران بالا برای خطا مورد بررسی قرار می­گیرد. کارایی این روش با Moreدر این مقاله یک روش عددی جدید برگرفته از روش هم­محلی، برای حل عددی مسایل مقدار اولیه سخت و معادلات انتگرال فردهلم نوع اول مبتنی بر مشتقات تابع مانده ارایه شده است؛ سپس تحلیل خطای این روش عددی با ارایه کران بالا برای خطا مورد بررسی قرار می­گیرد. کارایی این روش با ارایه چندین مثال عددی از مسایل سخت و بدوضع با کارایی روش هم­محلی مقایسه می­شود. نتایج عددی بدست آمده نشان می­دهد که روش ارایه شده در جایی که روش هم­محلی برای حل عددی این نوع مسایل با شکست مواجه می­شود از کارایی بالایی برخوردار است. Manuscript profile -
Open Access Article
13 - Retiring review cucumbers from the perspective of Sheikh Ansari and implementation of the civil rights Vara’ court precedents
Mohamad Mehdi Ahmadi najmeh azizi naserabadSummary Cucumber rights including financial rights that the warrants for Jurisprudence and Iranian Law and with the length and extent of the rights of other countries is not relevant. The Right Like other financial rights, can be dismantled. And like all legal acts req MoreSummary Cucumber rights including financial rights that the warrants for Jurisprudence and Iranian Law and with the length and extent of the rights of other countries is not relevant. The Right Like other financial rights, can be dismantled. And like all legal acts require the will and discretion. Dealers could not Khiari condition that initially they can then make the right cucumbers as well as it will dismantled. To the, so that The contracts are common today that it has created problems. To the extent that some lawyers are inclined to the view that such a provision is void contracts that have to know the other hand, the Shia jurisprudents about the possibility of waiving all no explicit provision in each cucumber cucumbers paid to the quality of overthrowing it. This rule has carefully considered the many problems faced by lawyers. In considering scrapping the cucumber appeal against this rule Astnsnayat, so that many of the lawyers referred to this rule is entered. Knew cucumber and residual rights, the rule of lawyers with many problems faced scrutiny. Cucumbers right that the two parties or one of them and then contract to a third party the authority to terminate the contract. The implementation of this legal action is the right one will be done and need to be willing and Rhythmic is among the contrary annulment is located mutual consent. Internal determination and passion Terminator has no effect on the contract. Manuscript profile -
Open Access Article
14 - Evaluating the Effects of Overload and Welding Residual Stress in Fatigue Crack Propagation
Ali Moarefzadeh Shahram Shahrooi Mehdi Jalali Azizpour -
Open Access Article
15 - Longitudinal and Lateral Vibration Analysis of Cables in a Cable Robot Using Finite Element Method
Hami Tourajizadeh Mahdi Yousefzadeh Moharram Korayem -
Open Access Article
16 - A study on the numerical simulation of thermo-mechanical behavior of the novel functionally graded thermal barrier coating under thermal shock
N. Nayebpashaee H. Vafaeenezhad S. M. M. Hadavi S. H. Seyedein M. R. Aboutalebi H. Sarpoolaky -
Open Access Article
17 - Experimental Study and Finite Element Simulation of Residual Stress in Welded Sections of Steel P91 Pipes with Multi-pass Welding
Davood Azadi Nosratollah Solhjoei SayedAli Mousavi -
Open Access Article
18 - Prediction of Residual Stresses by Radial Basis Neural Network in HSLA-65 Steel Weldments
M. Heidari -
Open Access Article
19 - Evaluation of S/N Diagram in Welded Joints Based on Different Fatigue Failure Criteria
Saeed Jouzdani Ali Heidari -
Open Access Article
20 - Weld Distortion and Residual Stresses in Aluminum Hollow Section T-Joint
Asghar Mahdian Arash Babamiri Behrooz Shahriari -
Open Access Article
21 - Experimental Correlation Between Microstructure, Residual Stresses and Mechanical Properties of Friction Stir Welded 2024-T6 Aluminum Alloys
Majid Farhang Mohammadreza Farahani Mohammad Nazari O. Sam Daliri -
Open Access Article
22 - Evaluation of Fatigue Behavior and Surface Characteristics of Novel Machining Process: Rotary Chemical Machining (RCM)
Pooya Bahrami Ali Khoshanjam Abdolhamid Azizi -
Open Access Article
23 - Removing Residual Stress and Increasing Fatigue Life by Ultrasonic Method
Ali Moarefzadeh -
Open Access Article
24 - Investigating the Effect of Joint Geometry of the Gas Tungsten Arc Welding Process on the Residual Stress and Distortion using the Finite Element Method
A Shiri A Heidari -
Open Access Article
25 - Multi-Objective Optimization of Shot-Peening Parameters Using Modified Taguchi Technique
M Hassanzadeh S. E Moussavi Torshizi -
Open Access Article
26 - Evaluation of Thermal Barrier Coating in Fatigue Life for an Aluminum Alloy Piston with Considering Residual Stress
H Ashouri -
Open Access Article
27 - Simulation of Residual Stress and Distortion in Welded Carbon Steel Pipe by Considering Solid-State Phase Transformation
M. R Jahanban S FeliIn this paper, a sequentially coupled 3-D thermal-metallurgical-mechanical analysis is developed to predict welding residual stresses and distortion during single-pass tungsten inert gas arc welding (TIG) of low and medium carbon steel pipes (S45C and S15C). The axial a MoreIn this paper, a sequentially coupled 3-D thermal-metallurgical-mechanical analysis is developed to predict welding residual stresses and distortion during single-pass tungsten inert gas arc welding (TIG) of low and medium carbon steel pipes (S45C and S15C). The axial and hoop residual stresses and welding deformation by allowing volumetric change due to solid-state phase transformation are determined. In ABAQUS finite element simulation, the moving heat source is modeled by a user subroutine [DFLUX], and a user subroutine [UEXPAN] is applied for computing the fraction of martensite and volume change during heating and cooling. The simulation results show that for the S15C pipe, solid-state phase transformation has an insignificant effect on welding residual stress and distortion but for the S45C pipe the solid-state phase transformation reduces the axial residual stress in the fusion (FZ) and heat-affected zones (HAZ). Also, the sign of hoop residual stress changes in FZ, and its value of it decreases in HAZ. Manuscript profile -
Open Access Article
28 - An Analytical Solution for Inverse Determination of Residual Stress Field
S.A Faghidian G.H Farrahi D.J Smith -
Open Access Article
29 - Effects of the Residual Stress and Bias Voltage on the Phase Diagram and Frequency Response of a Capacitive Micro-Structure
S Ahouighazvin M Mohamadifar P Mahmoudi -
Open Access Article
30 - Measurement of Variation in Fracture Strength and Calculation of Stress Concentration Factor in Composite Laminates with Circular Hole
A.R Ghasemi I Razavian -
Open Access Article
31 - Effect of Compressive Residual Stress on the Corner Crack Growth
M.H Gozin M Aghaie-Khafri -
Open Access Article
32 - Frequency Response Analysis of a Capacitive Micro-beam Resonator Considering Residual and Axial Stresses and Temperature Changes Effects
S Valilou M Jalilpour -
Open Access Article
33 - Hedging of Options in Jump-Diffusion Markets with Correlated Assets
Minoo Bakhshmohammadlou -
Open Access Article
34 - Comparison of the Third- order moving average and least square methods for estimating of shape and depth residual magnetic anomalies
Mohammad Fouladi Mirsattar Meshinchi Asl Mahmoud Mehramuz Nima Nezafati -
Open Access Article
35 - Analysis and presenting an optimum post weld heat treatment cycle to maximum reduction of residual stresses of electron beam welding
Hossein Rajabi Ali HeidariIn this research, the electron beam welding process of P91 steel plates was simulated by the finite element method in two dimensions and in a short time with acceptable accuracy in two steps (non-coupled thermal and mechanical analysis). The simulation results were vali MoreIn this research, the electron beam welding process of P91 steel plates was simulated by the finite element method in two dimensions and in a short time with acceptable accuracy in two steps (non-coupled thermal and mechanical analysis). The simulation results were validated with experimental and numerical results presented by other researchers. Moreover, by applying post weld heat treatment, the residual stresses were reduced. Then, the effect of heat treatment cycle parameters such as heat input power, heating time, holding time and cooling rate were investigated on the quantity of residual stress reduction. By examining the results of the effects of the parameters, an optimum heat treatment cycle is introduced to maximum reduction of the residual stress. Using this optimum heat treatment cycle, the residual stress value was reduced to 55 percent. Manuscript profile -
Open Access Article
36 - The effectiveness of mindfulness-based cognitive therapy on the executive functions of the prefrontal lobe, emotional regulation and cognitive impairment in depressed patients in ahvaz
Alireza Balooti Zahra BostangarThe aim of the current research was to determine the effectiveness of mindfulness based on cognitive therapy on executive functions (error in remaining), emotional regulation and cognitive deficits of depressed patients in Ahvaz counseling centers. The statistical popu MoreThe aim of the current research was to determine the effectiveness of mindfulness based on cognitive therapy on executive functions (error in remaining), emotional regulation and cognitive deficits of depressed patients in Ahvaz counseling centers. The statistical population of the present study consisted of all depressed patients of counseling centers in Ahvaz. Among the depressed patients eligible for the study, 30 patients were first selected as available, and then 15 were randomly assigned to the experimental group and 15 to the control group. The quasi-experimental research method was based on pre-test and post-test with control group. Cognitive impairment scale (Broadbent), emotion regulation questionnaire (Garnefsky), Wisconsin card sorting test (Grant and Berg, 1993) and working memory test (Damin and Carpenter) were used to collect data. A mindfulness based cognitive therapy plan was implemented on mean and standard deviation and inferential statistics univariate and multivariate covariance analysis. According to the results of univariate and multivariate analysis of covariance, mindfulness based cognitive therapy on executive functions, cognitive regulation and cognitive impairment and of depressed patients were effective. The results of the research showed that cognitive therapy based on mindfulness improves executive functions (residual error), emotional regulation and cognitive impairment of depressed patients. Manuscript profile -
Open Access Article
37 - Investigation and possibility of reduction of styrene monomer in polystyrene produced with GPPS and HIPS grades in the operating unit
فهیمه درخشانفرIn this study, the possibility of further reducing the amount of styrene monomers remaining in the product of ordinary and resistant polystyrene in the operating unit was investigated and the effect of vacuum pressure on evaporator tanks, and amount of water injected in MoreIn this study, the possibility of further reducing the amount of styrene monomers remaining in the product of ordinary and resistant polystyrene in the operating unit was investigated and the effect of vacuum pressure on evaporator tanks, and amount of water injected into the polymer content before entering the evaporator tanks, and polymer volume in Evaporative tanks and polymer temperature and the effect of operating parameters of polymerization and processing reactors on the amount of residual monomer have been studied and investigated. Also, the performance of the mechanism of evaporative tanks has been investigated and finally a conclusion has been made to optimize and reduce the styrene monomer. In the following, technical and practical suggestions for the necessary modifications based on the above are presented . In the following, technical and practical suggestions for the necessary modifications based on the above are presented . In the following, technical and practical suggestions for the necessary modifications based on the above are presented . Manuscript profile -
Open Access Article
38 - Identification and Robust Fault Detection of Industrial Gas Turbine Prototype Using LLNF Model
Leila Shahmohamadi Mahdi AliyariShoorehdeli Sharareh Talaie -
Open Access Article
39 - Numerical Solution of Seismic Wave Propagation Equation in Uniform Soil on Bed Rock with Weighted Residual Method
M.H. Jahangir -
Open Access Article
40 - Determination of Residual Stress of PACVD Nanostructure TiN Coatings by GIXRD Method
Mahdi Raoufi A. Zolanvari Majid zarezadeh -
Open Access Article
41 - Investigation on High Temperature Wear Resistance of Cryotreated Hot Work Tool Steel
Iman Ebrahimzadeh Farhad Gharavi کامران امینی zahra Ghorbani -
Open Access Article
42 - The Computational Study of Number of Shot Particles and Distance Effects on Residual Stress and Mechanical Behavior of Ti-6Al-4V Alloy after Shot Peening Process: Molecular Dynamics Approach
Ali Moradi Ali Heidari Kamran Amini Farshid Aghadavoudi Reza Abedinzadeh -
Open Access Article
43 - Investigating the Effect of Residual Stress on Fatigue Crack Propagation by Modified J-integral and Experimental Method
Ali Moarrefzadeh Shahram Shahrooi -
Open Access Article
44 - Experimental Study on In-Depth Residual Stress due to 420 Stainless Steel Creep-Feed Grinding Using the Deflection-Electro Polishing Technique
Vahid Jafarpour Rasoul Moharrami -
Open Access Article
45 - Measurement of Residual Stress in Composites Using Central Hole Drilling and Digital Image Correlation Methods
Peyman Ghasemi Tamami Davood Akbari Farid Azadi -
Open Access Article
46 - Thermal and Stress Analysis in Butt, T-shaped and Tubular Joints in the Welding Process of Dissimilar Parts
Adel Tavabe Behdad Jahanbeen Seyed Mohammad Reza Nazemosadat Ahmad Afsari -
Open Access Article
47 - Numerical/Experimental Analysis of the Deformation of Tubes under Concentrated Load
Javad Jafari Fesharaki Omid Rejali Seyed Ghasem Madani -
Open Access Article
48 - Numerical and Experimental Study of Residual Stress Measurement and Thickness Distribution of T-shape Steel Tube Produced by Tube Hydroforming
Javad Shahbazi Karami Gholamhasan Payganeh Mohsen Khodsetan -
Open Access Article
49 - Evaluation of initial imperfection mode shapes and slashing of steel tanks
Ahmad maleki Ali satariThin wall shell structure has low weight and high resistance. The load capacity, buckling behavior and post buckling behavior of steel tanks thin wall, is very sensitive to geometric imperfections. Due to the small wall thickness of the shell structures enabling t MoreThin wall shell structure has low weight and high resistance. The load capacity, buckling behavior and post buckling behavior of steel tanks thin wall, is very sensitive to geometric imperfections. Due to the small wall thickness of the shell structures enabling the creation of any deformation and there is a disturbance on the surface of the wall. Considering the types of errors occurred when build or assembled these structures, are not built these structure, ideally. This imperfections may be in the process of rolling, removable panels, installation or welding arise. Incomplete reports about the negative impact of the effect of welding on the axial bearing capacity. Comprehensive research on the effects of imperfection of initial geometrical shape on the steel tank vibration modes, and its effect on the bearing capacity steel storage tanks that considerable research It's not done. In this research, the actual behavior of cylindrical shells with initial geometric imperfections on mode shapes steel tanks in the pre-buckling and post-buckling. And the effect of initial geometric imperfections on steel tanks slashing been paid. Using finite element software, ABAQUS, and verification of the results of the analysis and nonlinear analysis with experimental results. Been paid. Imperfect geometric shape has changed mods. The effect of these changes on slashing are very small. Manuscript profile -
Open Access Article
50 - The Effects of Restaurant Residuals in the Diet on General Performance, Egg Characteristics, Blood Parameters and Intestinal Morphology of Japanese Quails
Y. Karimi A.A. Saki H. Jahanian Najafabadi P. Zamani M. Houshyar -
Open Access Article
51 - Growth Performance, Rumen and Cecum Fermentation Parameters, and Microbial Protein Synthesis in Kermani Lambs with Divergent Residual Feed Intake Fed Forage and Concentrate Diets
M. Gevari M.R. Dehghani M. Yousef Elahi R. Hoshyar -
Open Access Article
52 - Effect of Different Fat Sources on some Blood Metabolites, Hormones, and Enzyme Activities of Lambs with Different Residual Feed Intake in Heat-Stressed Condition
G. Halakoo ا. تیموری یانسری M. Mohajer Y. Chashnidel -
Open Access Article
53 - An Efficient Protocol for Data Aggregation In Wireless Sensor Networks
Mohammad Karim Sohrabi Elahe Khorramian -
Open Access Article
54 - Residuals based process capability indices for two-stage processes
Erfaneh Nikzad Amirhossein Amiri Babak Abbasi -
Open Access Article
55 - Control chart based on residues: Is a good methodology to detect outliers?
Jean Paulo Guarnieri Adriano Mendonça Souza Luciane Flores Jacobi Bianca Reichert Claudimar Pereira da Veiga -
Open Access Article
56 - The Least Cost Design of Water Distribution Networks Using Water Quality Constraints
M. Tabesh M. Zabihi M. Dini -
Open Access Article
57 - Residual Reactive Attachment Disorder in Adolescence
Shahla PakdamanThe goal of this study was to determine the prevalence of Reactive Attachment Disorder (RAD) or Residual Reactive Attachment Disorder in adolescents. The Adult Attachment Questionnaire (AAQ), Revised Attachment Scale (RAAS), diagnostic systematic interview of Attachment MoreThe goal of this study was to determine the prevalence of Reactive Attachment Disorder (RAD) or Residual Reactive Attachment Disorder in adolescents. The Adult Attachment Questionnaire (AAQ), Revised Attachment Scale (RAAS), diagnostic systematic interview of Attachment Disorder, and clinical interview about Residual Reactive Attachment Disorder in adolescence were administered to 280 randomly selected public high school students, half male and half female. Results indicated symptoms of either type of the Residual Reactive Attachment Disorder in 10.5% of participants: inhibited (3.5%) and disinhibited (6.8%). Aside from indicating the prevalence of RAD amongst Iranian adolescents, this study also provides new patterns and instruments for clinicians to detect this disorder Manuscript profile -
Open Access Article
58 - کاربرد روش پالس برای اندازه گیری برش افزایشی تنش های باقیمانده در کامپوزیت های چند لایه
محمود مهرداد شکریه سعید اکبری -
Open Access Article
59 - اندازه گیری تنش های باقیمانده در Quenched Cylinder با روش Slitting
ح. محمودی س. حیدریان ک. بهنام -
Open Access Article
60 - Comparative Investigating of Stock Valuation Discount Models with Emphasizing on Type of Industry in Companies Listed in Tehran Stock Exchange
Mehdi Arabsalehi Alireza Kamali DehkordiAbstract The purpose of this research is to compare the accuracy of models of discounting cash profits, discounting cash flows, residual profits and growth of abnormal profits in explaining the changes in the share prices of companies listed on the Tehran Stock Exchang MoreAbstract The purpose of this research is to compare the accuracy of models of discounting cash profits, discounting cash flows, residual profits and growth of abnormal profits in explaining the changes in the share prices of companies listed on the Tehran Stock Exchange during the years 1391 to 1398, considering the effect of the type of industry on the performance of these models. done. To carry out this research, the statistical sample, which included 105 companies, was divided into two groups: strategic industries and non-strategic industries. Then the aforementioned models were compared in relation to strategic industries and non-strategic industries. Also, the performance of each model was compared between strategic and non-strategic industries. The results of running the models and carrying out T-tests and variance analysis show that in strategic industries, the intrinsic values estimated by the models of discounting cash profits and discounting cash flows have the highest correlation with the stock market value. But in non-strategic industries, the intrinsic values estimated by any of the studied models had no significant correlation with the stock market value. On the other hand, the correlation coefficient of the intrinsic values estimated by all four models except the residual profit model with the stock market value was significantly higher in strategic industries than in non-strategic industries. The results show that in the Tehran Stock Exchange, profit cash items as well as cash flows are accepted more than other accounting information as criteria for buying and selling stocks. Also, the results of the research show that the profits and cash flows of companies active in strategic industries are more stable than in non-strategic industries. Manuscript profile -
Open Access Article
61 - Measurement and Analysis of the Productivity of Factors of Production into Separate Economic Sectors Bushehr Province, Iran
S. Nargesi Heshmatolah AsgariDue to the limited resources, the necessity of increasing productivity and the use of production factors in activities that are the most important. This study aimed to measure the productivity of the production of various economic sectors in the province for years of 20 MoreDue to the limited resources, the necessity of increasing productivity and the use of production factors in activities that are the most important. This study aimed to measure the productivity of the production of various economic sectors in the province for years of 2000-2007. Using the production function and panel data techniques and methods Solow residual productivity of production factors calculated. Based on the results, average total factor productivity , capital and labor in the study had abnormal trend and volatility are rising or falling. The mining industry and the highest rates of growth in productivity and labour and the communications sector as well as the highest average productivity of the capital. Manuscript profile -
Open Access Article
62 - Rice residual management on ratoon yield and agronomical characteristics in rice varieties in Amol, Iran
payam Asadi morteza Sam-Daliri hamid reza Mobasser salman Dastan In order to evaluate the rice residual management on ratoon yield and agronomical characteristics in rice varieties, an experiment was carried out in 2007. The experimental design was a split plot based on a randomized complete block More In order to evaluate the rice residual management on ratoon yield and agronomical characteristics in rice varieties, an experiment was carried out in 2007. The experimental design was a split plot based on a randomized complete block with four replications. Main plots was four varieties including Tarom Mahalli, Tarom Langrodi, Tarom Hashemi and Tarom Dylamani and three residual management including ground cutting, standing (cutting at 40 cm height) and lodging stubble (cutting at 40 cm height) as sub plots. Results showed that the highest plant height, panicle length, number of tiller per hill, panicle per m2 and grain yield was obtained in the Tarom Mahalli. The reason of highest grain yield in this variety were the increasing panicle length, number of tiller per hill and panicle per m2. The greatest number of spikelet per panicle was obtained on Tarom Hashemi. The lodging stubble method had the highest panicle length, 1000 grain weight and stubble yield. The greatest flag leaf length and fertile tiller percentage were observed in the ground cutting method. The number of spikelet per panicle had positive correlation with grain yield and the grain yield had negative correlation with tiller number at α=%1 level of probability. Therefore Tarom Mahalli variety and lodging stubble method introduced for ratooning harvest. Manuscript profile -
Open Access Article
63 - ارائه یک طرح جدید جهت اتصال لولههای آلومینیومی در سازههای زیر سطحی
غلامرضا مزروعی علی حیدریدر این تحقیق روش جدیدی جهت اتصال لولههای آلومینیومی بهوسیله مبدل فولادی و جوش آلومینیوم در سازههای زیر سطحی ارائه و بررسی شده است. به علت ایجاد گرمای نسبتا زیاد در محل جوشکاری، ناحیه اطراف لبه جوش تحت سیکل حرارتی بالایی قرار میگیرد و باعث ایجاد تنشهای پسماند در محل Moreدر این تحقیق روش جدیدی جهت اتصال لولههای آلومینیومی بهوسیله مبدل فولادی و جوش آلومینیوم در سازههای زیر سطحی ارائه و بررسی شده است. به علت ایجاد گرمای نسبتا زیاد در محل جوشکاری، ناحیه اطراف لبه جوش تحت سیکل حرارتی بالایی قرار میگیرد و باعث ایجاد تنشهای پسماند در محل جوش خواهد شد. بنابراین جهت بررسی اتصال پیشنهاد شده از دیدگاه تنش پسماند، به کمک نرم افزار المان محدودABAQUS جوشکاری دو پاسه لولههای AL 5083 به همراه مبدل فولادی A 36 به صورت سه بعدی مدلسازی شده و تنشهای پسماند حاصل در مناطق اطراف جوش محاسبه گردیده است. بدلیل حساسیت موضوع روند شبیه سازی مورد اعتبار سنجی قرار گرفته است. در مدلسازی انجام شده خواص مکانیکی و حرارتی لوله به صورت تابعی از دما به نرم افزار داده شده و با توجه به جریان، ولتاژ و سرعت الکترود، شار حرارتی به صورت یک بار حجمی خارجی روی محیط جانبی لوله بوسیله مدل منبع حرارتی گلداک اعمال گردیده است. تنش های حاصل در جسم از زمان اعمال شار حرارتی تا رسیدن دمای محل جوش به دمای محیط محاسبه شده و تنشهای نهایی باقیمانده در جسم در انتهای فرایند تبادل حرارتی با محیط تنشهای پسماند می باشند. نتایج مدلسازی انجام شده همخوانی مناسبی با نتایج تجربی دارد و نشان میدهد که اتصال پیشنهاد شده مناسب بوده و از نظر مقادیر تنش پسماند سازه دچار مشکل نخواهد شد. Manuscript profile -
Open Access Article
64 - Effect of residual stress in low cycle fatigue for coated exhaust manifold
Hojjat ashouri -
Open Access Article
65 - طرح ابتکاری مدل معادل برای شبیهسازی فرایند جوشکاری
علی حیدری محمدرضا فروزان جعفر گلستانهبسیاری از محققان بدلیل زمان و هزینه بالای شبیهسازی سهبعدی جوشکاری تنها به حل دوبعدی آن اکتفا میکنند. در این تحقیق با ارائه یک طرح ابتکاری (تعریف یک مدل معادل برای شبیهسازی جوشکاری)، تعداد المانها و گرهها را کاهش داده و در نتیجه زمان حل را کاهش و تا حد زیادی مشکلات Moreبسیاری از محققان بدلیل زمان و هزینه بالای شبیهسازی سهبعدی جوشکاری تنها به حل دوبعدی آن اکتفا میکنند. در این تحقیق با ارائه یک طرح ابتکاری (تعریف یک مدل معادل برای شبیهسازی جوشکاری)، تعداد المانها و گرهها را کاهش داده و در نتیجه زمان حل را کاهش و تا حد زیادی مشکلات حلهای سهبعدی را برطرف نمودهایم. شبیهسازی فرایند جوشکاری زیرپودری به کمک روش اجزاء محدود با تحلیل غیر کوپله حرارتی و مکانیکی در سه مرحله به انجام رسیده است. در مرحله اول از حل حرارتی تاریخچه دمایی مشخص شده و سپس در مرحله دوم توزیع فازهای متالورژیکی در نواحی ذوب و متاثر از جوشکاری محاسبه میشود. نهایتاً در مرحله سوم از حل مکانیکی، توزیع تنش بهدست میآید که خاصیت ماده برای هر المان با توجه به فاز مشخص شده در مرحله دوم به آن اختصاص مییابد. یکی از مهمترین اهداف این شبیهسازی، بررسی تنشهای پسماند حاصل از جوشکاری میباشد. مقایسهای بین نتایج حرارتی حاصل شده از برنامه با نتایج متالوگرافی و آزمایشگاهی این تحقیق صورت گرفته است که گویای دقت بالای برنامه است. Manuscript profile -
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66 - بررسی عددی و تجربی تنش پسماند و استحکام خستگی فولاد CK35 در فرآیند ساچمه زنی
مهدی تاجداری حمیدرضا بهاروندی علیرضا مرادخانیساچمه زنی نوعی بمباران سطحی قطعه کار توسط هزاران ساچمه است که به ایجاد تنش پسماند فشاری در سطح قطعه کار می­­انجامد و به منظور بهبود خواص مکانیکی همچون خستگی، مقاومت در برابر خوردگی تنشی، صاف کردن شکل دهی و... انجام می­­گیرد. در این پژوهش نمونه­­ه Moreساچمه زنی نوعی بمباران سطحی قطعه کار توسط هزاران ساچمه است که به ایجاد تنش پسماند فشاری در سطح قطعه کار می­­انجامد و به منظور بهبود خواص مکانیکی همچون خستگی، مقاومت در برابر خوردگی تنشی، صاف کردن شکل دهی و... انجام می­­گیرد. در این پژوهش نمونه­­هایی از فولاد CK35 مورد عملیات ساچمه زنی با سرعت برخورد m/s 100 و m/s200 ساچمه­­های استاندارد S230 قرار گرفتند و استحکام خستگی آن­ها با نمونه­­های فاقد ساچمه زنی مورد مقایسه قرار گرفت. همچنین تغییر عمق نفوذ ساچمه­­ها در نمونه­­ها توسط نرم افزار ANSYS محاسبه گردید و با نتایج تجربی مقایسه شد. نتایج حاصل، افزایش قابل توجه استحکام خستگی را دربرداشت. این مقادیر برای برخورد ساچمه­ها با سرعت m/s100، 25% افزایش در استحکام خستگی و بیش از MPa 250 تنش پسماند ایجاد شده در سطح کار و برای برخورد ساچمه­­ها با سرعت m/s200، 40% افزایش در استحکام خستگی و بیش از MPa 300 تنش پسماند در سطح کار بهدست آمد. همچنین میزان تنش ایجاد شده در ساچمه­­ها دو برابر تنش پسماند القاء شده نسیت به سطح کار حاصل شد. Manuscript profile -
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67 - بررسی پارامترهای مؤثر در تعیین تنش های پسماند در صفحات فلزی و چندلایههای کامپوزیتی با روش شیارزنی
محمود مهرداد شکریه سعید اکبری رکنآبادیروش شیارزنی یکی از روش­های پرکاربرد در اندازه­گیری تنش­های پسماند است که طی آن شیاری در چند مرحله در قطعه مورد نظر ایجاد شده و کرنش­های آزاد شده در هر مرحله به وسیله کرنش­سنج ثبت می­شود. ارتباط بین کرنش­های ثبت شده و تنش­های پسماند Moreروش شیارزنی یکی از روش­های پرکاربرد در اندازه­گیری تنش­های پسماند است که طی آن شیاری در چند مرحله در قطعه مورد نظر ایجاد شده و کرنش­های آزاد شده در هر مرحله به وسیله کرنش­سنج ثبت می­شود. ارتباط بین کرنش­های ثبت شده و تنش­های پسماند به وسیله ماتریس ضرایب نرمی صورت می­گیرد. در این تحقیق به کمک روش اجزای محدود، پارامترهای مؤثر در محاسبه مقادیر ضرایب نرمی برای صفحات فلزی ایزوتروپیک و همچنین چند لایه­های کامپوزیتی بررسی شده است. در ابتدا فرایند شبیهسازی برای صفحات ایزوتروپیک بهصورت دو و سه بعدی انجام گرفته است. نتایج بهدست آمده بیانگر تطابق کامل نتایج دو مدل است. برای محاسبه ضرایب نرمی نیاز به محاسبه کرنش متوسط در محل کرنش­سنج است. برای این کار از روش­های مبتنی بر کرنش و مبتنی بر جابهجایی استفاده شده است. همچنین با مقایسه ترک و شیار، تأثیر عرض شیار بر ضرایب نرمی بررسی شده است. سپس میزان کرنش ثبت شده توسط کرنشسنجهای با طول اندازهگیرهای مختلف مقایسه و مشخص شد با استفاده از کرنشسنج­های با طول اندازهگیر کمتر، میزان کرنش ثبت شده افزایش یافته و در نتیجه خطای اندازه­گیری کاهش مییابد. در نهایت با استفاده از مدل سه­بعدی ارائه شده ضرایب نرمی برای دو چندلایه­ای کامپوزیتی کربن- اپوکسی و شیشه- اپوکسی تعیین شده­اند. Manuscript profile