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This paper examines current practices and recent literature in the area of educational alternatives and concludes that the alternative curricula movement has failed to provide a broad range of curricular alternatives that may be selected to fit the needs and interests of individual students and teachers. The authors argue that a theoretical and practical basis for differentiating curricular alternatives is needed, and they suggest that Grannis's model of "family,""factory," and "corporate" schools provides a useful theoretical basis. The second half of the paper explicates Grannis's model and discusses its implications for curricular alternatives in terms of such practical considerations as school operations, school organization, and educational evaluation. (Author/JG)

We present the concepts for an electron storage ring dedicated to and optimized for the production of stable coherent synchrotron radiation (CSR) over the far-infrared terahertz wavelength range from 200 μm to about one cm. CIRCE (Coherent InfraRed CEnter) will be a 66 m circumference ring located on top of the ALS booster synchrotron shielding tunnel and using the existing ALS injector. This location provides enough floor space for both the CIRCE ring, its required shielding, and numerous beamlines. We present the calculated CIRCE photon flux where a gain of 6 – 9 orders of magnitude is shown compared to existing far-IR sources. Additionally, the particular design of the dipole vacuum chamber has been optimized to allow an excellent transmission of these far-infrared wavelengths. We believe that the CIRCE source can be constructed for a modest cost. © 2004 American Institute of Physics [ABSTRACT FROM AUTHOR]