Cover for PhD Dissertation

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This customer received 18 book cover designs from 13 designers. They chose this book cover design from selador.si as the winning design.
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I need a design for the cover of my PhD dissertation. Most importantly, it should reflect its major theme, which is "Stability and Fluidity". I was thinking of a polygon design that fades into fluidity on its edges, but I am open to other suggestions. Stability is more important, so the overall picture should convey that; fluidity should be in there as well, but less pronounced, if possible.
The attached Photoshop file contains information about the desired dimensions (i.e., 32 cm x 24 cm + 1.1 cm in width for the middle part) and the things that should be on it. There are two logos in the file: one of the research unit and one of the university. Both could be much smaller than they are now; the logo of the university does not have to be on the cover if it does not fit, but its colors could be used in the design.
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