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California Polytechnic State University, San Luis Obispo

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Urbanization And Food Imports In Sub-Saharan Africa, James Tabi, Wayne H. Howard, Truman Phillips Dec 1991

Urbanization And Food Imports In Sub-Saharan Africa, James Tabi, Wayne H. Howard, Truman Phillips

Agribusiness

The Granger statistical test of causality was used to examine the relationship between total food imports and urbanization and between food aid and urbanization. Urbanization appears to have caused total food imports to increase in 13 of the 24 countries. Food imports appear to be a cause of urbanization in three countries. Food aid, however, apparently was a cause of urbanization in 16 of the 24 countries used in the analysis.


Evaluation Of Torsional Provisions In Seismic Codes, Anil K. Chopra, Rakesh K. Goel Dec 1991

Evaluation Of Torsional Provisions In Seismic Codes, Anil K. Chopra, Rakesh K. Goel

Civil and Environmental Engineering

The effects of plan asymmetry on the earthquake response of code-designed, one-story systems are identified with the objective of evaluating how well these effects are represented by torsional provisions in building codes. The earthquake-induced deformations and ductility demands on resisting elements of asymmetric-plan systems, designed according to several different codes, are compared with their values if the system plan were symmetric. The presented results demonstrate that the design eccentricity in building codes should be modified in order to achieve the desirable goal of similar ductility demands on asymmetric-plan and symmetric-plan systems. The design eccentricity should be defined differently for elastic …


The Choice Of A Mixing Distribution In Duration Models, Sanjiv Jaggia Dec 1991

The Choice Of A Mixing Distribution In Duration Models, Sanjiv Jaggia

Economics

The Hougaard mixing distribution is considered for a Weibull duration model. This distribution is flexible and also encompasses the gamma and the inverse Gaussian distributions making it useful in discriminating between alternate distributions.


Mustang Daily, November 26, 1991 Nov 1991

Mustang Daily, November 26, 1991

Cal Poly Student Newspaper

Student newspaper of California Polytechnic State University, San Luis Obispo, CA.


Mustang Daily, November 25, 1991 Nov 1991

Mustang Daily, November 25, 1991

Cal Poly Student Newspaper

Student newspaper of California Polytechnic State University, San Luis Obispo, CA.


Mustang Daily, November 22, 1991 Nov 1991

Mustang Daily, November 22, 1991

Cal Poly Student Newspaper

Student newspaper of California Polytechnic State University, San Luis Obispo, CA.


Mustang Daily, November 21, 1991 Nov 1991

Mustang Daily, November 21, 1991

Cal Poly Student Newspaper

Student newspaper of California Polytechnic State University, San Luis Obispo, CA.


November 21, 1991 Cal Poly Report, Public Affairs Office Nov 1991

November 21, 1991 Cal Poly Report, Public Affairs Office

Cal Poly Report

No abstract provided.


Mustang Daily, November 20, 1991 Nov 1991

Mustang Daily, November 20, 1991

Cal Poly Student Newspaper

Student newspaper of California Polytechnic State University, San Luis Obispo, CA.


Mustang Daily, November 19, 1991 Nov 1991

Mustang Daily, November 19, 1991

Cal Poly Student Newspaper

Student newspaper of California Polytechnic State University, San Luis Obispo, CA.


Academic Senate - Meeting Minutes, 11/19/1991, Academic Senate Nov 1991

Academic Senate - Meeting Minutes, 11/19/1991, Academic Senate

Academic Senate Minutes

No abstract provided.


As-371-91 Resolution On Voting Membership Of The General Faculty, Constitution And Bylaws Committee Nov 1991

As-371-91 Resolution On Voting Membership Of The General Faculty, Constitution And Bylaws Committee

Academic Senate Resolutions

Modifies voting membership to the General Faculty in the Constitution of the Faculty.


Academic Senate - Agenda, 11/19/1991, Academic Senate Nov 1991

Academic Senate - Agenda, 11/19/1991, Academic Senate

Academic Senate Agendas

No abstract provided.


As-370-91 Resolution On Faculty Suspension With Pay, Personnel Policies Committee Nov 1991

As-370-91 Resolution On Faculty Suspension With Pay, Personnel Policies Committee

Academic Senate Resolutions

Adds CAM language stating President’s authority to suspend a faculty member if there is a compelling reason.


Mustang Daily, November 18, 1991 Nov 1991

Mustang Daily, November 18, 1991

Cal Poly Student Newspaper

Student newspaper of California Polytechnic State University, San Luis Obispo, CA.


Mustang Daily, November 15, 1991 Nov 1991

Mustang Daily, November 15, 1991

Cal Poly Student Newspaper

Student newspaper of California Polytechnic State University, San Luis Obispo, CA.


November 14, 1991 Cal Poly Report, Public Affairs Office Nov 1991

November 14, 1991 Cal Poly Report, Public Affairs Office

Cal Poly Report

No abstract provided.


Mustang Daily, November 14, 1991 Nov 1991

Mustang Daily, November 14, 1991

Cal Poly Student Newspaper

Student newspaper of California Polytechnic State University, San Luis Obispo, CA.


Mustang Daily, November 13, 1991 Nov 1991

Mustang Daily, November 13, 1991

Cal Poly Student Newspaper

Student newspaper of California Polytechnic State University, San Luis Obispo, CA.


Mustang Daily, November 8, 1991 Nov 1991

Mustang Daily, November 8, 1991

Cal Poly Student Newspaper

Student newspaper of California Polytechnic State University, San Luis Obispo, CA.


November 7, 1991 Cal Poly Report, Public Affairs Office Nov 1991

November 7, 1991 Cal Poly Report, Public Affairs Office

Cal Poly Report

No abstract provided.


Mustang Daily, November 7, 1991 Nov 1991

Mustang Daily, November 7, 1991

Cal Poly Student Newspaper

Student newspaper of California Polytechnic State University, San Luis Obispo, CA.


Mustang Daily, November 6, 1991 Nov 1991

Mustang Daily, November 6, 1991

Cal Poly Student Newspaper

Student newspaper of California Polytechnic State University, San Luis Obispo, CA.


Executive Committee - Meeting Minutes, 11/5/1991, Academic Senate Nov 1991

Executive Committee - Meeting Minutes, 11/5/1991, Academic Senate

Academic Senate Minutes

No abstract provided.


Executive Committee - Agenda, 11/5/1991, Academic Senate Nov 1991

Executive Committee - Agenda, 11/5/1991, Academic Senate

Academic Senate Agendas

No abstract provided.


Mustang Daily, November 5, 1991 Nov 1991

Mustang Daily, November 5, 1991

Cal Poly Student Newspaper

Student newspaper of California Polytechnic State University, San Luis Obispo, CA.


Mustang Daily, November 4, 1991 Nov 1991

Mustang Daily, November 4, 1991

Cal Poly Student Newspaper

Student newspaper of California Polytechnic State University, San Luis Obispo, CA.


Testing Purchasing Power Parity Under The Null Hypothesis Of Co-Integration, Eric O'N. Fisher, Yoon Y. Park Nov 1991

Testing Purchasing Power Parity Under The Null Hypothesis Of Co-Integration, Eric O'N. Fisher, Yoon Y. Park

Economics

No abstract provided.


Improved Efficiency In Semiconducting Polymer Light-Emitting Diodes, David Braun, A. J. Heeger, H. Kromer Nov 1991

Improved Efficiency In Semiconducting Polymer Light-Emitting Diodes, David Braun, A. J. Heeger, H. Kromer

Electrical Engineering

We report visible light emission from metal-polymer diodes made from semiconducting polymers, with indium-tin oxide as the “ohmic” contact, and a variety of metals as the barrier metal. Our results, which confirm the discovery by the Cambridge group [Nature347, 539 (1990)], demonstrate that light-emitting diodes can be fabricated by casting the polymer film on indium-tin oxide from solution with no subsequent polymer processing or heat treatment required. Electrical characterization reveals diode behavior with rectification ratios greater than 105 at sufficiently high voltages. Use of an electrode material with low work function leads to more than an order of magnitude improvement …


Variation Of Superparamagnetic Properties With Iron Loading In Mammalian Ferritin, Richard B. Frankel, G. C. Papaefthymiou, G. D. Watt Nov 1991

Variation Of Superparamagnetic Properties With Iron Loading In Mammalian Ferritin, Richard B. Frankel, G. C. Papaefthymiou, G. D. Watt

Physics

The average blocking temperatures of ferritin molecules containing differing amounts of iron were determined by Mossbauer spectroscopy. The results imply that the magnetic anisotropy of the ferritin core particles is a function of particle volume. By addition of 57Fe to ferritin core particles it was determined that, at a given temperature within the superpara-magnetic temperature region, the “last-in” ferric ions have average relaxation times that are shorter than those of the bulk ferric ions.