scholarly journals Potential dose variability for small‐field plans delivered with Elekta Agility collimators

Author(s):  
Joseph J. Foy ◽  
Poonam Yadav ◽  
Indra J. Das
Keyword(s):  
1994 ◽  
Vol 144 ◽  
pp. 593-596
Author(s):  
O. Bouchard ◽  
S. Koutchmy ◽  
L. November ◽  
J.-C. Vial ◽  
J. B. Zirker

AbstractWe present the results of the analysis of a movie taken over a small field of view in the intermediate corona at a spatial resolution of 0.5“, a temporal resolution of 1 s and a spectral passband of 7 nm. These CCD observations were made at the prime focus of the 3.6 m aperture CFHT telescope during the 1991 total solar eclipse.


Author(s):  
Lisa Heldke

John Dewey’s record as a feminist and an advocate of women is mixed. He valued women intellectual associates whose influences he acknowledged, but did not develop theoretical articulations of the reasons for women’s subordination and marginalization. Given his mixed record, this chapter asks, how useful is Dewey’s work as a resource for feminist philosophy? It begins with a survey of the intellectual influences that connect Dewey with a set of women family members, colleagues, and students. It then discusses Dewey’s influence on the work of late twentieth- and early twenty-first-century pragmatist feminist philosophers. Dewey’s influence has been strongest in the fields of feminist epistemology, philosophy of education, and social and political philosophy. Although pragmatist feminist philosophy remains a small field within feminist philosophy, this chapter argues that its conceptual resources could be put to further good use, particularly in feminist metaphysics, epistemology, and value theory.


1983 ◽  
Vol 102 (3) ◽  
pp. 511-521 ◽  
Author(s):  
A. R. THOMPSON ◽  
A. L. PERCIVALL ◽  
G. H. EDMONDS ◽  
G. R. LICKORISH
Keyword(s):  

2021 ◽  
Vol 2 (1) ◽  
Author(s):  
Mónica Graf ◽  
Jorge Íñiguez

AbstractThe electrocaloric effect, that is, the temperature change experienced by an insulator upon application of an electric field, offers promising ecofriendly alternatives to refrigeration. However, the theoretical treatments of this response are mostly case specific and lack a unified picture revealing the similarities and differences among the various known effects. Here, we show that the electrocaloric effect lends itself to a straightforward interpretation when expressed as a Taylor series in the external field. Our formalism explains in a unified and simple way the most notable small-field effects reported in the literature, namely the so-called normal and inverse electrocaloric responses, corresponding to an increase or decrease of temperature under applied field, as usually found in ferroelectrics or antiferroelectrics, respectively. This helps us to clarify their physical interpretation. We then discuss in detail atomistic simulations for the prototype ferroelectric PbTiO3, explicitly evaluating subtle predictions of the theory, such as the occurrence of competing contributions to the electrocaloric response.


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