Ebrahimian E.,Ferdowsi University of Mashhad |
Bybordi A.,Agricultural and Natural Resources Research Center of Iran |
Seyyedi S.M.,University of Torbat-e-Heydarieh
Communications in Soil Science and Plant Analysis | Year: 2017
In order to investigate the effects of nitrogen (N) and zinc (Zn) fertilizers on seed yield, oil percentage, glucosinolate content, and nutrient uptake of canola (Brassica napus L. cv. Okapi), irrigated with saline and ultra-saline water, field experiments were conducted in Agriculture Research Centre of East Azarbaijan, Iran, during three consecutive years: 2011, 2012, and 2013. The experiments were carried out based on randomized complete block design arranged in factorial with three replications. The experimental treatments included N rates at three levels (0, 50, and 100 kg ha−1), Zn rates at three levels (0, 5, and 10 kg ha−1), and saline water at two levels (8 and 16 dS m−1 as saline and ultra-saline water). According to the results, N and Zn application had a significant effect on the plant height, pod number per plant, and seed yield. However, the value of these traits decreased as a result of the higher salinity level (from 8 to 16 dS m−1). From the results, the glucosinolate content was not affected by N or Zn fertilization, whereas, salinity increased the glucosinolate content from 27.51% to 30.06% when saline water and ultra-saline water were applied, respectively. In addition, the effect of ultra-saline water on the decrease in the N, phosphorous, potassium, and calcium uptake and the increase in the sodium and chlorine accumulation in canola seed was significant. However, Zn application could diminish adverse effects of salinity on phosphorus uptake. For instance, under ultra-saline water conditions, application of 10 kg ha−1 Zn increased the seed phosphorus content compared with control treatment. In general, it seems that nutrients’ supply, especially N and Zn, can be considered as an effective solution to diminish adverse effects of salinity. © 2017 Taylor & Francis.
Naeini S.E.Y.,University of Torbat-e-Heydarieh |
Maroosi A.,University of Torbat-e-Heydarieh
International Journal of Electrical and Computer Engineering | Year: 2017
A Sampling rate is less than Nyquist rate in some applications because of hardware limitations. Consequently, extensive researches have been conducted on frequency detection from sub-sampled signals. Previous studies on under-sampling frequency measurements have mostly discussed under-sampling frequency detection in theory and suggested possible methods for fast under-sampling frequencies detection. This study examined few suggested methods on Field Programmable Gate Array (FPGA) for fast under-sampling frequencies measurement. Implementation of the suggested methods on FPGA has issues that make them improper for fast data processing. This study tastes and discusses different methods for frequency detection including Least Squares (LS), Direct State Space (DSS), Goertzel filter, Sliding DFT, Phase changes of Fast Furrier Transform (FFT), peak amplitude of FFT to conclude which one from these methods are suitable for fast under-sampling frequencies detection on FPGA. Moreover, our proposed approach for sub-sampling detection from real waveform has less complextity than previous approaches from complex waveform. © 2017 Institute of Advanced Engineering and Science.
Bazrafshan Moghadam B.,University of Torbat-e-Heydarieh |
Farhad Mollashahi H.,University of Torbat-e-Heydarieh
Journal of Civil Engineering and Management | Year: 2017
Although there are typical and well-known standard methods for designing hot mix asphalt in the world, there is no unique design method for cold recycled asphalt mixes. The current methods are mainly local or even dependent on technology owners due to the diversity of materials and qualitative control limitations. Currently, most of the design methods are based on 4 inch mold. The major problem of these methods is that in the mix design, the effect of aggregates larger than 25 mm is neglected, while this size of aggregates is used in the recycling projects. Therefore, there is a significant difference between in-situ and laboratory mix behaviors. So, 6-inch mold is used. In this study, a simple mix design has been obtained for reclaimed asphalt pavements (RAP) considering the different amount of emulsified asphalt, Portland cement, three gradations, moisture contents, temperatures, and curing times. For this reason, 315 samples were prepared. The results show that the mixes with aggregates larger than 25 mm have a significant difference with 25 mm and smaller aggregates sizes in terms of mechanical properties and moisture susceptibility. Therefore, 6-inch molds should be used for RAP materials that are larger than 25 mm in the mix design. © 2017 Vilnius Gediminas Technical University (VGTU) Press.
Naseri S.,University of Torbat-e-Heydarieh |
Motallebzadeh K.,University of Torbat-e-Heydarieh
Educational Technology and Society | Year: 2016
This study investigated the effect of listening to podcasts on Iranian upper-intermediate EFL learners' self-regulation ability and their perception toward the use of technology. To meet the objectives of the current stud y, 54 female Iranian EFL learners were selected. In experimental group they listened to podcast files while in the control group they listened to a radio program. The practices were done through cognitive and metacognitive strategies. A self-regulation ability questionnaire was administered among the participants of both groups. Also, the data obtained from learners' self-reflection journals were added and interpreted qualitatively and supported the results of this study. Keeping a self-reflection journal provided a detailed account of learners' thoughts and perception regarding their listening to podcasts. It revealed learners' positive prospective toward podcasting application in the language learning process and it was clear that the participants in experimental group played a much more dynamic role as a learner. According to the findings of this study use of podcasts as an educational technology can significantly influence and foster self-regulation ability of the learners. Most participants showed a positive perception toward the use of podcast as an educational technology in language learning.
Moosavian N.,University of Torbat-e-Heydarieh |
Kasaee Roodsari B.,Syracuse University
Swarm and Evolutionary Computation | Year: 2014
Water distribution networks are one of the most important elements in the urban infrastructure system and require huge investment for construction. Optimal design of water systems is classified as a large combinatorial discrete non-linear optimization problem. The main concern associated with optimization of water distribution networks is related to the nonlinearity of discharge-head loss equation, availability of the discrete nature of pipe sizes, and constraints, such as conservation of mass and energy equations. This paper introduces an efficient technique, entitled Soccer League Competition (SLC) algorithm, which yields optimal solutions for design of water distribution networks. Fundamental theories of the method are inspired from soccer leagues and based on the competitions among teams and players. Like other meta-heuristic methods, the proposed technique starts with an initial population. Population individuals (players) are in two types: fixed players and substitutes that all together form some teams. The competition among teams to take the possession of the top ranked positions in the league table and the internal competitions between players in each team for personal improvements are used for simulation purpose and convergence of the population individuals to the global optimum. Results of applying the proposed algorithm in three benchmark pipe networks show that SLC converges to the global optimum more reliably and rapidly in comparison with other meta-heuristic methods. © 2014 Elsevier B.V.
Zabbah I.,University of Torbat-e-Heydarieh
Proceedings of SPIE - The International Society for Optical Engineering | Year: 2012
Electro Discharge Machine (EDM) is the commonest untraditional method of production for forming metals and the Non-Oxide ceramics. The increase of smoothness, the increase of the remove of filings, and also the decrease of proportional erosion tool has an important role in this machining. That is directly related to the choosing of input parameters.The complicated and non-linear nature of EDM has made the process impossible with usual and classic method. So far, some methods have been used based on intelligence to optimize this process. At the top of them we can mention artificial neural network that has modelled the process as a black box. The problem of this kind of machining is seen when a workpiece is composited of the collection of carbon-based materials such as silicon carbide. In this article, besides using the new method of mono-pulse technical of EDM, we design a fuzzy neural network and model it. Then the genetic algorithm is used to find the optimal inputs of machine. In our research, workpiece is a Non-Oxide metal called silicon carbide. That makes the control process more difficult. At last, the results are compared with the previous methods. © 2012 Copyright Society of Photo-Optical Instrumentation Engineers (SPIE).
Mohaghegh M.R.,University of Torbat-e-Heydarieh
Computational Thermal Sciences | Year: 2015
In this paper, numerical solution of similarity equations for compressible laminar boundary-layer flow considering heat transfer and arbitrary pressure gradient has been undertaken. These equations have been solved with the assumption of a small difference in viscosity, adopting a Prandtl number of 1 for a Falkner-Skan type compressible flow. Since similarity equations of momentum and energy of the flow are coupled and dependent on each other, they have to be solved simultaneously. The numerical technique applied in this work is a fourth-order Runge-Kutta method for ordinary differential equations. Also, a shooting method is used for the governing boundary conditions which have to be solved iteratively to reach convergence. Obtained results show that for favorable (negative), pressure gradient, there is no separation in the flow either for the hot wall or for the cold one. It also supports the fact that unfavorable (positive) pressure gradient is a necessity for separation. However, there is a difference between the two obtained face angles that cause separation in these two face conditions. As heat transfer in the boundary layer from the wall to the fluid causes a discontinuity in the velocity profile and will increase the tendency of backflow, this angle is less for a hot wall compared to the cold one. Also, the problem has been simulated using the Fluent™ code and the numerical results are compared by the results of Fluent, to validate each other. © 2015 by Begell House, Inc.
Mohaghegh M.R.,University of Torbat-e-Heydarieh
International Review of Mechanical Engineering | Year: 2011
Forced and free convection heat transfer phenomena are similar in some aspects, but governed by different equations and correlations. While the forced convection over a wedge is governed by the Flakner-Skan equation where momentum equation independent of energy equations, while in the free convection these equations are dependent on each other and must be solved simultaneously. This paper analyses natural convection heat transfer mechanism on an isothermal vertical flat plat and forced convection over a Wedge, through solving the similarity of governing equations. Boundary layer formed on the plate and wedge is a laminar. Numerical techniques applied in this work are fourth order Runge-Kutta method for ordinary differential equations solution and shooting method for boundary conditions. © 2011 Praise Worthy Prize S.r.l.- All rights reserved.
Moosavian N.,University of Torbat-e-Heydarieh
Swarm and Evolutionary Computation | Year: 2015
Soccer league competition (SLC) algorithm, is a new meta-heuristic optimization technique and has been successfully used to tackle the optimization problems in discrete or continuous space. Fundamental ideas of SLC are inspired by a professional soccer leagues and based on the competitions among teams and players. Population individuals or players are in two types: fixed players and substitutes that all together form some teams. The competition among teams to take the possession of the top ranked positions in the league table and the internal competitions between players in each team for personal improvements are used for simulation purpose and convergence of the population individuals to the global optimum. In this study, an enhanced SLC algorithm is proposed to solve knapsack problems effectively. This new version is free and independent from adjusting the parameters. The experimental results on the some benchmark knapsack problems demonstrate that the proposed SLC is efficient and effective, which outperforms the other algorithms, in terms of the search accuracy, reliability and convergence speed. © 2014 Elsevier B.V. All rights reserved.
Abtahi T.,University of Torbat-e-Heydarieh |
Motallebzadeh K.,University of Torbat-e-Heydarieh
International Journal of Applied Linguistics and English Literature | Year: 2016
This study examines Iranian EFL teachers’ sense of professional identity and their computer literacy. To these end, 718 EFL teachers from different cities in Iran filled out job satisfaction, occupational commitment, and computer literacy questionnaires. SPSS software was employed to summarize the collected data. Independent Sample t-test and Pearson Product-Moment Correlation were run to check the level of significance. For qualitative data collection, five openended questions were added to the end of the job satisfaction questionnaire. The obtained answers were categorized and the frequency for each category was calculated. The results revealed that computer literacy has a significant relation with continuance commitment, job satisfaction, and gender. The results further suggested that teacher computer literacy provided an encouraging base for their professional identity. © 2016, Australian International Academic Centre PTY LTD. All rights reserved.