Technological Progress And the Duration of Contribution Spans
Technological Progress And the Duration of Contribution Spans
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T. , The American Synthetic Rubber Industry, University of Pennsylvania Press, Philadelphia (1989).
16 [15] Sicilia, D. B. , "A Most Invented Invention, " Invention & Technology Spring/Summer, 45-50(1990).
[16] Elandt-Johnson, R. C. , and Johnson, N. L. , Survival Models and Data Analysis, ]o\\vi Wiley & Sons, New York, (1980).
[17] KaJbfleisch J. D. , and Prentice, R. L. , The Statistical Analysis of Failure Time Data, John Wiley & Sons, New York, (1980).
[18] Allison, P. D. , Event History An...alysis, Sage Publications, Newbury Park (1984).
[19] Lancaster, T. , The Econometric Analysis of Transition Data, Cambridge University Press, Cambridge, (1990).
TABLE 1 Variables used in the analysis and their definitions CATEGORY VARIABLE DESCRIPTION Dependent variable Contribution span Span of years since researcher's first and last patent application or publication in the field Covariates: Technical field EPDM=0; polypropylene=l Author/inventor productivity Cumulative number of patent applications or publications in the field by the author Organization productivity Cumulative number of patent applications and publications in the field by the author/inventor's organization Industrial Author/inventors employed in industrial firms = 1; otherwise = Eastbloc Author/inventors from Eastbloc countries= 1; otherwise = Market size Annual industrial production of EPDM and polypropylene in kilotons Patents Cumulative number of patents granted in the field Population Total number of inventors/authors in the field Population^/lOOO Second order term of population size Dispersion Index of organizational dispersion of inventors/authors in the field (Hirfindahl index) TABLE 2 ML estimation of contribution spans using different distributions £!(p?n':n(i»l Wcibull Gamma Log-logistic Intercept -0.
What to read after Technological Progress And the Duration of Contribution Spans?
You can find similar books in the "Read Also" column, or choose other free books by Michael a Rappa to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
T. , The American Synthetic Rubber Industry, University of Pennsylvania Press, Philadelphia (1989).
16 [15] Sicilia, D. B. , "A Most Invented Invention, " Invention & Technology Spring/Summer, 45-50(1990).
[16] Elandt-Johnson, R. C. , and Johnson, N. L. , Survival Models and Data Analysis, ]o\\vi Wiley & Sons, New York, (1980).
[17] KaJbfleisch J. D. , and Prentice, R. L. , The Statistical Analysis of Failure Time Data, John Wiley & Sons, New York, (1980).
[18] Allison, P. D. , Event History An...alysis, Sage Publications, Newbury Park (1984).
[19] Lancaster, T. , The Econometric Analysis of Transition Data, Cambridge University Press, Cambridge, (1990).
TABLE 1 Variables used in the analysis and their definitions CATEGORY VARIABLE DESCRIPTION Dependent variable Contribution span Span of years since researcher's first and last patent application or publication in the field Covariates: Technical field EPDM=0; polypropylene=l Author/inventor productivity Cumulative number of patent applications or publications in the field by the author Organization productivity Cumulative number of patent applications and publications in the field by the author/inventor's organization Industrial Author/inventors employed in industrial firms = 1; otherwise = Eastbloc Author/inventors from Eastbloc countries= 1; otherwise = Market size Annual industrial production of EPDM and polypropylene in kilotons Patents Cumulative number of patents granted in the field Population Total number of inventors/authors in the field Population^/lOOO Second order term of population size Dispersion Index of organizational dispersion of inventors/authors in the field (Hirfindahl index) TABLE 2 ML estimation of contribution spans using different distributions £!(p?n':n(i»l Wcibull Gamma Log-logistic Intercept -0.
What to read after Technological Progress And the Duration of Contribution Spans?
You can find similar books in the "Read Also" column, or choose other free books by Michael a Rappa to read onlineMoreLess
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