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( ) 2021 м ۵ 2008 ر м ̰ Ÿٰ 7 .
ü ʷ 2008 ϰ ִ , ǰ ִ 15õ ϴ ǥ (R&D) ̴.
ر 980 1,565 Ե, 4.9 1 . 25ϱ , 32 271 8.5 1 Ÿ´.
̹ ߰ м 2008 ú 2020 Ϸ 699 , 1~3Ⱓ , , ٰ мߴ.
м Ưâ 1,479, ű â 6,959, â 7,430 , 2382õ , ϸ Ⱓ Ե 1,201 6.4 ȿ ŵ Ÿ. (R&D)ڱ 1 ϸ ̸ 64õ ϴ ̴.
1 ߰ 꼺 м ű â 5.79, Ư 1.23, 0.57, Ÿ 0.87 ұ ȿ ſ Ÿ.
Ư ̹ м ڡȸ ȯ ȿ Ȯϱ ܰ ȸͺм(stepwise regression) ǽ . м , ߺ 1% ȯ ȿ(μ ) 9.86 ϴ Ÿ.
Խ ̷å Ȯ 꼺 ȯ ȿ âϰ ִٴ Ȯεƴ١鼭 Ȱȭ ֵ Ƴ ʰڴ١ ߴ.
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