منابع مشابه
Morgan Dean
Introduction Landsat Thematic Mapper ( TM ) imagery was used to analyze patterns of landscape diversity in the seasonal tropical forests of northeastern Guatemala. TM radiance and the radiance coefficient of variation (CV) were significant in discriminating land-cover types. Cluster analysis of TM4, TM5, and TM7 radiance produced six distinct types of landcover. Green leaf biomass from TM4 and ...
متن کاملDean Jolliffe
This article examines the impact of cognitive skills on the income of households in Ghana. It uses scores on mathematics and English tests to measure cognitive skills and estimates the returns to these skills based on farm profit, off-farm income, and total income. The article uses Powell’s censored least absolute deviations and symmetrically trimmed least squares estimators to estimate farm an...
متن کاملForeword Leonard
Much has changed in computer security since 1973, when the Bell-LaPadula model was first published. Development has moved away from kernel-based secure systems toward application-level security capabilities, providing secure transactions on top of commercial, nonsecure operating systems. The potential for widespread use of encryption for privacy, authentication, and other services, as embodied ...
متن کاملLeonard triples and hypercubes
Let V denote a vector space over C with finite positive dimension. By a Leonard triple on V we mean an ordered triple of linear operators on V such that for each of these operators there exists a basis of V with respect to which the matrix representing that operator is diagonal and the matrices representing the other two operators are irreducible tridiagonal. Let D denote a positive integer and...
متن کاملLeonard Euler on the Center of Similitude
In the past Euler has shown considerable interest in specific cases of similarity in which one figure is constructed from another in some way (consider, e.g., E-129, Opera Omnia I.27 130-180 Investigatio curvarum quae evolutae sui similes producant, in which the objects of study are planar curves which are similar to their own evolutes). In the current work, he considers any two similar figur...
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ژورنال
عنوان ژورنال: Critical Inquiry
سال: 2012
ISSN: 0093-1896,1539-7858
DOI: 10.1086/667425