Flows of knowledge from universities and federal laboratories: Modeling the flow of patent citations over time and across institutional and geographic boundaries

The extent to which new technological knowledge flows across institutional and national boundaries is a question of great importance for public policy and the modeling of economic growth. In this paper we develop a model of the process generating subsequent citations to patents as a lens for viewing knowledge diffusion. We find that the probability of patent citation over time after a patent is granted fits well to a double-exponential function that can be interpreted as the mixture of diffusion and obsolescense functions. The results indicate that diffusion is geographically localized. Controlling for other factors, within-country citations are more numerous and come more quickly than those that cross country boundaries.

Collection of humorous verses and sketches relating to Harvard College, 1769

Manuscript volume in various hands containing three general sections: satirical poems about Harvard tutors, a section of "last words & dying" speeches of Harvard tutors, and a copy of the Book of Harvard."

Remarks on a report of a committee of the Overseers of Harvard College, proposing certain changes, relating to the instruction and discipline of the College; read May 4, 1824, and to be taken into consideration June 1, 1824.

Attributed to Andrews Norton by himself in his Speech delivered before the Overseers of Harvard College, February 3, 1825 ... Boston, Cummings, Hilliard, & Co. University Press--Hilliard & Metcalf, 1825 (p.4).

Inflation measures for schools and colleges /

Mode of access: Internet.

Report of Her Majesty's Commissioners appointed to inquire into the state, discipline, studies, and revenues of the University of Dublin, and of Trinity College : together with appendices, containing evidence, suggestions, and correspondence. /

Title is preceded on title page by: Dublin University Commission.

Definition of the requirements in plane geometry, solid geometry, plane and solid geometry, major requirement, plane and solid geometry minor requirement /

Wm. F. Osgood, chairman.

The graduate school, today and tomorrow; reflections for the profession's consideration,

Mode of access: Internet.

The university and the state. An address before the University of Tennessee, June 14, 1898.

Mode of access: Internet.

Report of the regular Committee of the Senate and House, 33d General Assembly, to visit the State Educational Institutions /

Mode of access: Internet.

The Cyropaedia of Xenophon, according to the text of L. Dindorf; with notes, for the use of schools and colleges,

Mode of access: Internet.

University research: effect of indirect cost revisions and options for future changes.

Mode of access: Internet.

Realizing the potential : improving postsecondary teaching, learning and assessment /

"Grant R117G10037"--T.p. verso.

The feasibility of establishing highway safety manpower development and research centers at university-level institutions. Volume I: study report. Final report.

National Highway Safety Bureau, Washington, D.C.

The feasibility of establishing highway safety manpower development and research centers at university-level institutions. Volume II: appendixes. Final report.

National Highway Safety Bureau, Washington, D.C.

Develop and test an associate degree program for traffic records analyst. Final report.

National Highway Traffic Safety Administration, Washington, D.C.