کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
988223 | 935266 | 2006 | 29 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
R&D depreciation, stocks, user costs and productivity growth for US R&D intensive industries
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کلمات کلیدی
موضوعات مرتبط
علوم انسانی و اجتماعی
اقتصاد، اقتصادسنجی و امور مالی
اقتصاد و اقتصادسنجی
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چکیده انگلیسی
This paper estimates R&D depreciation rates for U.S. R&D intensive industries. R&D annually depreciates at; 18% for chemical products, 26% for nonelectrical machinery, 29% for electrical products, and 21% for transportation equipment. These depreciation rates lead to new estimates of the marginal (gross of depreciation) returns to R&D capital; 0.25 for chemical products, 0.31 for nonelectrical machinery, 0.34 for electrical products, and 0.27 for transportation equipment. R&D investment significantly contributed to productivity growth; virtually 100% in chemical products, 55% in nonelectrical machinery, 38 percent in electrical products, and 84% in transportation equipment.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Structural Change and Economic Dynamics - Volume 17, Issue 1, January 2006, Pages 70-98
Journal: Structural Change and Economic Dynamics - Volume 17, Issue 1, January 2006, Pages 70-98
نویسندگان
Jeffrey I. Bernstein, Theofanis P. Mamuneas,