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  2. Transparency (graphic) - Wikipedia

    en.wikipedia.org/wiki/Transparency_(graphic)

    One color entry in a single GIF or PNG image's palette can be defined as "transparent" rather than an actual color. This means that when the decoder encounters a pixel with this value, it is rendered in the background color of the part of the screen where the image is placed, also if this varies pixel-by-pixel as in the case of a background image.

  3. Community greens - Wikipedia

    en.wikipedia.org/wiki/Community_Greens

    Community Greens, sometimes referred to as backyard commons, urban commons, or pocket neighborhoods, are shared open green spaces on the inside of city blocks, created either when residents merge backyard space or reclaim underutilized urban land such as vacant lots and alleyways. These shared spaces are communally used and managed only by the ...

  4. Urban green space - Wikipedia

    en.wikipedia.org/wiki/Urban_green_space

    [46] [47] With urban green space giving children the opportunity to get outside and expend energy, children are more focused in school and have a better working memory and reduced inattentiveness. [48] Another facet of urban green space improving mental health is giving children access to a community.

  5. Alpha compositing - Wikipedia

    en.wikipedia.org/wiki/Alpha_compositing

    A color spectrum image with an alpha channel that falls off to zero at its base, where it is blended with the background color.. In computer graphics, alpha compositing or alpha blending is the process of combining one image with a background to create the appearance of partial or full transparency. [1]

  6. Green urbanism - Wikipedia

    en.wikipedia.org/wiki/Green_urbanism

    A glimpse on the history of green urbanism of the U.S. as found in Karlenzig's, et al. ‘How Green is Your City’ book (2007, 06–07). The concept had a gradual start in the late 1800s, when some large cities of the United States (U.S.) started using advanced drinking water, sewage and sanitary systems.

  7. RGBA color model - Wikipedia

    en.wikipedia.org/wiki/RGBA_color_model

    RGBA stands for red green blue alpha. While it is sometimes described as a color space , it is actually a three-channel RGB color model supplemented with a fourth alpha channel . Alpha indicates how opaque each pixel is and allows an image to be combined over others using alpha compositing , with transparent areas and anti-aliasing of the edges ...

  8. Environmental gentrification - Wikipedia

    en.wikipedia.org/wiki/Environmental_Gentrification

    Environmental gentrification is commonly understood as the process in which urban green space improvements lead to the displacement of lower-income communities, although the exact definition remains a topic of debate. [10] Green gentrification is closely related to urban planning and climate mitigation efforts.

  9. Green infrastructure - Wikipedia

    en.wikipedia.org/wiki/Green_infrastructure

    They are an important component of urban green infrastructure systems. Urban forests use appropriate tree and vegetation species, instead of noxious and invasive kinds, which reduce the need of maintenance and irrigation. [53] In addition, native species also provide aesthetic value while reducing cost.

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