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Problem: A look at the history of the presence of art in public spaces shows that with the change of the paradigm of public art from artist-oriented art to the creation of society-oriented art and audience-oriented art, the choice of the type of public art and the environmental qualities affected by it appear more important. What threatens urban spaces today is the weak connection between the building components of a place, which cannot meet the needs of citizens.
Target: The current research aims to investigate the effect of visual art on environmental quality and tries to create the necessary environmental quality in the design of future urban spaces by experts.
Method: This research is developmental-applied in terms of type, and in terms of method, it has a nest-to-nest combination. To answer the research question, the qualitative research method is used in a nest-by-nest quantity. The statistical population is divided into two quantitative and qualitative parts. In the qualitative group of the statistical population, there were 14 experts who were selected by the snowball method. In the statistical population of quantitative research, the sample size is 180 people based on Cochran's formula and random sampling.
Result: The analysis of the results indicates that according to the results of multivariate regression, the component of visual richness with the value of (1.000) has the highest factor contribution, in the second order, the component of enjoying the environment with the value of (0.920) And the lowest is related to the component of improving the individual sense of belonging with the value (0.244). The special attention of urban designers regarding the structure of spaces and the use of extraction measures from the impact of visual arts components in urban spaces in different scales can increase the quality of urban environments.

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In this paper, stress distribution around a triangular hole in finite isotropic plate under in-plane loading is studied. With the assumption of plane stress conditions, the method employed is based on the analytical solution of Muskhelishvili’s complex variable method and conformal mapping. The finite plate (the ratio of the length of the biggest side of the hole to side of the plate is greater than 0.2) can be considered as isotropic and linearly elastic. For solving the problem, the finite area with a triangular hole in z plan is mapped onto finite area outside a unite circle in ζ plan using the conformal mapping function. The stress function in finite plate with triangular hole is presented by superposition of the stress function for an infinite plate with a triangular hole and ones for a finite plate without a hole. The unknown coefficients in stress function are obtained by using the least square boundary collocation method and applying the appropriate boundary conditions. The effect of hole curvature, hole orientation, plate’s aspect ratio, hole size, type of loading as the effective parameters is investigated. The results based on analytical solution are in a good agreement with the results obtained from the finite element method . The results show that the analysis of the stress distribution in perforated plates that the ratio of the length of the biggest side of the hole to the smallest side of the plate is greater than 0.2, by using the infinite plate theory has a great error.

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Nowadays, Ginseng is used in production of functional foods because of its beneficial effects in prevention and treatment of cancers, diabetes, central nervous system disorders, etc. Ginsenosides, the largest and most prominent compounds in Ginseng, are responsible for the known health effects of Ginseng plant. The present study aimed to produce a functional beverage and evaluate the quality characteristics of this health beverage. The effects of adding red Ginseng extract at different levels (0, 0.5, 1 and 2 g L^-1) on pH, titratable acidity, color values, the viability of Lactobacillus acidophilus and Bifidobacterium lactis and overall acceptability of probiotic Doogh containing mint powder (1 g L^-1) were investigated during 21-day storage at 4ºC. The results showed that with increasing the level of red Ginseng extract up to 2 g L^-1, no significant difference was observed in the pH and titratable acidity of probiotic Doogh samples (P> 0.05); color values of the Doogh samples changed significantly (P< 0.05); viability ofthe probiotic bacteria increased significantly (P< 0.05); and the overall acceptability decreased significantly (P< 0.05). In general, Doogh sample containing 1 g L^-1 red Ginseng extract gained the highest overall acceptability score in comparison with the other samples.