-
Open Access Article
1 - Profitability of Momentum and Contrarian Strategies Based on Trading Volume in Tehran Stock Exchange: A Comparison of Emerging Market
Mahmood Yahyazadehfar Shahabeddin shams Saeideh Lorestani -
Open Access Article
2 - Evaluating the herding behavior of individual investors in the Iranian capital market and the factors affecting it with a complex network approach
Alireza Borhanian Ghanad Hasan Ghodrati Ghazaani Hossein Jabbari Hosein PanahianThe present study aimed to evaluate the smooth behavior of individual investors in the Iranian capital market and the factors affecting it with a complex network approach. The statistical population of this research is limited to explaining the model, decision-making, a MoreThe present study aimed to evaluate the smooth behavior of individual investors in the Iranian capital market and the factors affecting it with a complex network approach. The statistical population of this research is limited to explaining the model, decision-making, and selection of the optimal capital combination including 246 mutual funds on the Tehran Stock Exchange. The research method is based on the factors identified from the research sources and according to Christie and Huang model with emphasis on complex networks, and Eviews and Matlab software to explain the model in which according to the research variables, and changes in cross-sectional stock returns of the method Arch and Garch have been used to calculate the herd-like behavior with a complex network approach. Finally, the results of this study show that the herd behavior in individual and institutional investors in the Iranian market has been approved in the period 1393 to 1398. It can be clearly seen. Manuscript profile -
Open Access Article
3 - Geometrical Effects of Duct on the Entropy Generation in the Laminar Forced Convection Separated Flow
Nasrin Aminzadeh Shima Sotoodehnia Meysam Atashafrooz -
Open Access Article
4 - Investigating the Effect of Separation Speed and Image Cross-Section Geometry on The Separation Force in DLP Method using FEP and PP Polymer Membranes
Siavash Moayedi Manizani Jamal Zamani Mohammad Salehi Mohammad Taghi shayesteh -
Open Access Article
5 - Typological Analysis of Theories and Approaches for Transect Model Backgrounds
Mustafa Behzadfar Mehran Alalhesabi Eelnaz Amirhodaei -
Open Access Article
6 - The relationship between the literacy rate and emigration in Iran
Seyyed Ali Paytakhti Oskooe Laleh Tabaghchi Akbari Migration is one of the influencing factors on population and it has long-term and short-term positive and negative effects, which these effects change the social and economic structure in regions of origin and immigration. Many factors affect t More Migration is one of the influencing factors on population and it has long-term and short-term positive and negative effects, which these effects change the social and economic structure in regions of origin and immigration. Many factors affect the migration, in which the role literacy rate is very important. By increasing people's awareness, level of education as one of the indicators of the development improves workforce skills, expertise and the living standards. It can affect the motivations of migration. In this paper, in addition to literacy rate the effect of economic growth, unemployment and Internet penetration on migration has been studied using the 1390 data. Empirical results from employing Dynamic Ordinary Least Squares (DOLS) technique show that the effect of literacy rate on migration is negative. Manuscript profile -
Open Access Article
7 - Optical Coherence Tomography: A Brief Review
Nasser Moslehi Milani -
Open Access Article
8 - Analysis of Buckling Mode and Buckling Limit Stress of Steel Box Beam-Column Members Under Axial Load and Bending Moment Interaction
mohammad kabiri mihammad norouzi The beam columns are under the influence of bending and compression, given that the buckling occurs in these members in one of the lateral, torsional and lateral-torsional forms, the bending moment and compressive axial force ratio have a More The beam columns are under the influence of bending and compression, given that the buckling occurs in these members in one of the lateral, torsional and lateral-torsional forms, the bending moment and compressive axial force ratio have a significant effect on the behavior of the buckling. This paper investigates the performance of thin-walled closed box steel boxes under different loading conditions, concentrated load in the middle of the span, and a uniform distributed load with finite element method and with two-headed joint supported conditions in the range of elastic behavior. The tenth topic of the National Building Regulations, due to the large buckling limit moment from the yield limit buckling, does not occur in any global buckling, however, it mentions the probability of occurrence of lateral buckling in the range of post-elastic deformations for seismic beams. The results of this study show that in the presence of flexural loads, the buckling mode of the sections studied varies from the lateral buckling to the lateral-torsion, and the greater the ratio of the flexural loads to the axial loads, the torsional deformations will be greater. But, in the presence of bending loads on the buckling plane, the buckling mode of the sections in a certain amount of bending load will change from the global buckling to the local buckling. Compared to the three loading, the lowest M/P ratio, which leads to a global buckling, is related to the uniform distributed loading. By choosing the correct support condition in terms of the rotation around each of the fender members, and the appropriate shape of the box section, the strength of the member under the compression axial force-bending moment can be improved Manuscript profile -
Open Access Article
9 - Effect of tide range on equilibrium of section-area of inlet of estuaries
A. Karami Khaniki F. Bakhshandeh K. LariEstuary inlets are important elements influencing control of sediment movement and its distribution on the coast. Wave, current and sediment interaction can have a significant impact on inlets’ profile. At the bottleneck, the point where the minimum entry level is MoreEstuary inlets are important elements influencing control of sediment movement and its distribution on the coast. Wave, current and sediment interaction can have a significant impact on inlets’ profile. At the bottleneck, the point where the minimum entry level is created, dominant force for transport of sediment is tidal fluctuations. Known empirical relationship between cross-sectional area at the inlet (A) and tidal prism (P) has been studied by various workers. Researchers have carried out extensive studies on A and Prelation in which A is the minimum cross-section area (in comparison with average sea level) and P is tidal prism. Their input on 28 estuaries of the United States showed high-coefficient values in a table in which C= 4.6 × 10 -4 and n= 0.85 also C= 6.5 × 10 -5 and n= 1 are the best values (high regression coefficient) for these coefficients. Various researchers continued these studies and could provide a relation that is far right applicable to other coastal areas with different tidal patterns. Results of studying n and c coefficients by Marcel was expressed that for various estuaries and tidal ranges of microtidal to mesotidal, one is the best power for n. In the following research using outputs of modeling the relationship between canal cross-section area with tidal prism was studied and c and n=1 coefficients were calculated, respectively, 2×10 -5 and 6×10 -6 for modeling and relationship theory (dean). Then we compared results between the theory and modeling. We also observed a direct relationship between the two parameters of channel cross-sectional area and tidal prism. Relationships were presented for inlets’ section width and tidal prism. Manuscript profile -
Open Access Article
10 - Exploring Herding Behavior based on Weighted Cross-Sectional Variance (WCSV) in Tehran Stock Exchange
akram sadat sadati MohammasdEbrahim AghababaeiHerding behavior of investors is one of the main behavioral fears and important biases in financial markets that has attracted a lot of attention. The existence of herding in behavior is a term for explaining how individuals within a group can work together without the MoreHerding behavior of investors is one of the main behavioral fears and important biases in financial markets that has attracted a lot of attention. The existence of herding in behavior is a term for explaining how individuals within a group can work together without the prior plan. This research identifies and measures this important bias and examines herding behavior in Tehran Stock Exchange. This study, using a Weighted Cross-Sectional Variance analysis method, which is a new method based on the theory of pricing arbitrage, has been used to identify herding behavior. This is a combination of models based on return dispersion and beta-based models. The statistical population included all companies accepted in the Tehran Stock Exchange during the period of 1389-1394. In this research, the Chang, Chang and Khorana return distribution model and also the CAPM-based cross-sectional variance model are estimated and compared with the original model, which results indicate the superiority of the original model compared to other models. Also, the results of the research indicate that herding behavior is poorly observed in all years, while during the research period of 1392, there are more strong herding points and therefore, more than other years, faced with herding behavior phenomenon. Manuscript profile -
Open Access Article
11 - Selection of Fuzzy Multi-Purpose Portfolios Based on the Cross-Sectional Return Model of Data Envelopment Analysis in Tehran Stock Exchange
fazel mohammadi nodeh Ahmad ayoub mousaabadi masoud asadi abbas babaei Shaban MohammadiFuzzy multifunctional sets reduce the need for accurate data for decision making. Data Envelopment Analysis is a theoretical framework for performance analysis and performance measurement. Fuzzy increases the application of data envelopment analysis. Measuring the perfo MoreFuzzy multifunctional sets reduce the need for accurate data for decision making. Data Envelopment Analysis is a theoretical framework for performance analysis and performance measurement. Fuzzy increases the application of data envelopment analysis. Measuring the performance of companies with the help of data envelopment analysis can help investors in choosing a company. In this paper, the problem of selecting fuzzy portfolios in a multipurpose framework is examined. A comprehensive model for selecting multi-purpose portfolios in fuzzy environment is presented using a semi-variance model and a model for analyzing information development with cross-sectional returns. Data from 40 companies accepted in Tehran Stock Exchange and trapezoidal returns of 40 sheets of securities and the data required for inputs and output of data envelopment analysis were obtained from financial statements of companies from the beginning of 1396 to the end of 1396. 16 financial parameters were used. Sharp ratio, cross-sectional return model in Sharp ratio and multi-purpose firefighting algorithm for solving multi-purpose stock optimization model was used. Analysis was done with MATLAB software. The results showed that the proposed method in this research is more suitable for selection of fuzzy multipurpose portfolio than other methods and provides better results for performance analysis, efficiency and company selection for investment. Manuscript profile -
Open Access Article
12 - تحلیل کمانش الاستیک پوستههای مرکب با سطح مقطع بیضی تحت بار فشاری محوری
منصور درویزه ابوالفضل درویزه رضا انصاری الهام کاظمیدر این مقاله به بررسی کمانش الاستیک پوستههای مرکب با سطح مقطع بیضی با چیدمان صفر و نود درجه که تحت بار محوری فشاری هستند، پرداخته می­شود. روش حل بر مبنای اجزا محدود، براساس تئوری تغییر شکل برشی مرتبه اول اتخاذ شده است. یک المان هشت گرهای برای به دست آوردن رف Moreدر این مقاله به بررسی کمانش الاستیک پوستههای مرکب با سطح مقطع بیضی با چیدمان صفر و نود درجه که تحت بار محوری فشاری هستند، پرداخته می­شود. روش حل بر مبنای اجزا محدود، براساس تئوری تغییر شکل برشی مرتبه اول اتخاذ شده است. یک المان هشت گرهای برای به دست آوردن رفتار الاستیکی پوسته بیضوی در نظر گرفته شده است. کرنشها بر اساس جابهجاییها در مختصات محلی پوسته به دقت محاسبه شده و کار انجام شده توسط بار اعمالی به سازه، در نظر گرفته شده است. معادلات تعادل با استفاده از حداقل کردن انرژی پتانسیل به دست آمدهاند و با استفاده از روش صفر کردن دترمینان ماتریس سیستم، حل شدهاند. اثر تغییر پارامتر سطح مقطع بیضی (نسبت شعاع بزرگ به شعاع کوچک بیضی) بر روی بار کمانش بحرانی پوسته استوانه بیضوی بررسی شده است. نتایج مؤید این مطلب است که تغییر در پارامتر سطح مقطع بیضی میتواند به طور محسوسی بار کمانش بحرانی را تغییر دهد. Manuscript profile
Sanad
Sanad is a platform for managing Azad University publications
Links
Related Centers
Technical Support
Official pages
The rights to this website are owned by the Raimag Press Management System.
Copyright © 2021-2024