---

With regard to cultural studies approach and quality method, This research tries to represents the educational system ideas from Era of constitutionalism until Political Open Space in 1320s in order to perceive it in spite of its democratic nature of social changes, and also focuses on how authoritarian ideology were represented in educational system. Besides, according to constitutional revolution, forming of quasi-modern and national movement, have democratic ideas been instructed or not? This research by study of educational system as an important Ideological system in reproduction of power shows that during this period, content and the way of teaching of educational system were adapted with authoritarian discourse that was ruled between dualisms of school / family relation and sensitive subject of school was under inspiration and dictating of some mechanisms such as: authoritarianism, assimilation, dualism, conservatism, fatalism, tenderness, virtue, weaken of self- confidence and patience. Meanwhile there wasn't seemed to be any different and conflict discourse encounter with authoritarian discourse during this period.  

---

The main aim of this experiment is to investigate the effects of Nano-size Al2O3 on the mechanical properties and microstructure of multi-passes friction stir welding of Al 2024 lap joint. Nano particles were added into the joint line. A combination of rotational speed and travelling speeds were performed. Optical microscopy and scanning electron microscope were used to investigate the microstructure and fracture surface of samples respectively. Optimum condition (sample) was selected due to highest ultimate tensile strength (UTS). It was seen that sample which included Nano particles and fabricated by 1400 rev/min rotational speed and 16 mm/min travelling speed in second pass of continues welding had improvement in UTS in comparison to one pass welded sample of particle free and after that increasing the number of passes reduce the UTS. The average micro hardness of the sample which was particle rich were increased in comparison to particle free sample in nugget zone. Increasing the number of passes was not effect average micro hardness in nugget zone significantly. Grain sizes were reduced by 2 passes welding and after that no significant reduction has been seen.

---

Charkhak (Launaea acanthodes) is one of the most common species of medical herbs in central Iran. In this study, the gum was extracted by alcoholic extraction method with 90% ethanol that the yield percentage was 40.4%. Then, emulsifying properties of the extracted gum were investigated. To do so, soybean oil emulsions (10% w/w) were prepared using 1, 2, 4, and 6% gum. Following tests were done for all emulsions: surface and interfacial tension, stability testing, particle size distribution, observing by light microscope and viscosity of the emulsion. Altogether, it was illustrated that polysaccharide efficiency of Launaea acanthodes gum is higher than other national gums in Iran. According to the results, increasing the gum concentration in emulsion led to decrease in surface and interfacial tension but an increase in viscosity. The particle size distribution reduced with increasing the concentration of gum in emulsion. Moreover, the gum had good overall stability in the past two months.

---

  Peanut (Arachishypogaea), is one of the most valuable oil plant which is used a lot around the world. Storage under unfavorable conditions, leads to weight change due to moisture absorption, occurring oxidative reactions, moulding, and aflatoxin production by Aspergillusflavus which result in texture deterioration and quality loss. The aim of this study is to evaluate the effect of Launaeaacanthodes gum as an edible coating on self-Life of peanut (to prevent it from water absorption, weight change, oxidative reactions, and mould activity). For this purpose, firstly, the gum was extracted, purified, and dried. Then the solutions were prepared in concentrations of 0.5% and 1% V/W and coated on peanuts. The results showed that Launaeaacanthodes gum at 1% concentration, had a significant effect (p<0.05) on reduction rate of oxidation and moisture absorption. However, it had no significant effect (p<0.05) on inhibition the growth of the Aspergillus.

---

Accurate estimate of the land cover is of particular importance in environmental management and planning. Different methods have so far been developed for the classification of satellite imagery. Regarding the weakness of the hard classifiers in the presence of the mixed pixels, soft classification methods have been designed to estimate the fractions of different classes within mixed pixels. Linear spectral mixture model could be considered as the most popular method of soft classification. The accuracy of this model is extremely depended on the quality of the input pure pixels. The extraction of these pixels is often hard and challengeable. In this paper, making use of physical parameters (brightness, wetness, and greenness) is proposed for extraction of pure pixels. The evaluation criteria of unconstrained linear spectral mixture model were used assess the quality of pure pixels extracted from the proposed method. By Implementing of this model on the satellite image of the study area, the total number of under-shoot and over-shoot pixels was determined as 4.43 percent of the total image pixels. Also RMSE equaled to 2.68. Consequently, the proposed method demonstrated promising accuracy in the results of the linear spectral mixture model without considering any constraint.