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The bird base, or crane base, consists of a preliminary fold with both the front and the back sides petal folded upward. The frog base starts with a waterbomb base or preliminary fold. All four flaps are squash-folded (the result is the same in either case), and then the corners are petal folded upward.
The placement of a point on a curved fold in the pattern may require the solution of elliptic integrals. Curved origami allows the paper to form developable surfaces that are not flat. [41] Wet-folding origami is a technique evolved by Yoshizawa that allows curved folds to create an even greater range of shapes of higher order complexity.
Axioms 1 through 6 were rediscovered by Japanese-Italian mathematician Humiaki Huzita and reported at the First International Conference on Origami in Education and Therapy in 1991. Axioms 1 though 5 were rediscovered by Auckly and Cleveland in 1995. Axiom 7 was rediscovered by Koshiro Hatori in 2001; Robert J. Lang also found axiom 7.
Modular origami or unit origami is a multi-stage paper folding technique in which several, or sometimes many, sheets of paper are first folded into individual modules or units and then assembled into an integrated flat shape or three-dimensional structure, usually by inserting flaps into pockets created by the folding process. [3]
Bascinet without accessories. The bascinet – also bassinet, basinet, or bazineto – was a Medieval European open-faced combat helmet.It evolved from a type of iron or steel skullcap, but had a more pointed apex to the skull, and it extended downwards at the rear and sides to afford protection for the neck.
Since then, many variations of modified Sonobe units have been developed; some examples of these can be found in Meenakshi Mukerji's book Marvelous Modular Origami (2007). Another variation to Sonobe models is the addition of secondary units to basic Sonobe unit forms to create new geometric shapes; some of which can be seen in Tomoko Fuse's ...
In 2025, this amount — also known as the contribution and benefit base or taxable maximum — increases from $168,600 to $176,100. Early Retirees Can Earn More Income Without Benefit Reductions.
Several types of origami folds like the Diamond-Folding-Structure (RFS), the herringbone-fold-structure (FFS) or the miura fold, [33] [34] and other periodic patterns derived from it. [ 35 ] [ 36 ] Production of auxetic metamaterials through the introduction of patterned microstructural cuts using direct laser cutting .