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The purpose of this study is evaluate the optical properties of polyacrylonitrile (PAN) nanofibers containing fluorescent agents such as fluorescent dye and carbon quantum dots (CQDs) by using image-processing technique of Fluorescence microscope image.

The fluorescence microscope image of the pure PAN, PAN/CQDs and PAN/fluorescent dye nanofibers composite was analyzed using several image-processing techniques such as color histogram, lookup table (LUT), Fourier transform, RGB profile and surface plot analysis.

The fluorescence microscope image indicates that the fluorescence emission of nanocomposites depends on the type of fluorescent agent. The fluorescence intensity of nanofiber containing CQDs is more than nanofiber containing fluorescent dye. Various image-processing methods provide similar results for optical property of nanocomposites. Analyzing the LUT, the blue value of CQDs/PAN nanocomposite image was significantly higher than other nanocomposites. This was confirmed by other methods such as Fourier transform, color histogram and 3D topography of the electrospun nanofibers. According to analysis of colorimetric parameters, higher negative value of b* indicates bluer color for CQDs/PAN nanofibers than other nanocomposites. The obtained results indicate that the image-processing technique can be used to evaluate the optical property of fluorescent nanocomposite.

This study evaluates the optical properties of fluorescent nanocomposites by using image-processing techniques such as Fourier transform, color histogram, RGB profiles, LUT, surface plot and histogram analysis.

The inscription of Yazd historical fabric in United Nations Educational, Scientific and Cultural Organization (UNESCO) world heritage list has provided the city with the opportunity of international competence and to achieve a global identity. Fahadan is one of the nine historical quarters and the core of formation of the Yazd city. Fahadan is one of the nine historical quarters and the core of formation of Yazd city. The article intends to provide suitable policies for converting it into a sample creative quarter in Yazd historical fabric.

The article benefits from qualitative research and the strategic planning method based on a creative city approach, uses SWOT technique (a technique for finding an organization's strengths, weaknesses, opportunities and threats) for situation analysis and the Oregon model for visioning.

Two categories of hard and soft factors play a role in transitioning Fahadan quarter into a creative quarter. By expanding the scope of jobs related to jewelry, and creating its supporting activities in the food and leisure sector, a creative economy can be discovered in Fahadan quarter which alongside reinforcement of unique physical features of the area, forms a creative place. Its goal will be viewed as the place where artisans pave their way for reaching a creative quarter with new management.

The research presents policies to realize soft and hard factors required for creativity in the quarter, and shows step by step a small-scale pattern in the context of urban creativity planning, that can be used in historical fabrics with similar situation.