Results 31 to 40 of about 7,925,437 (177)

Evaluación de tierras para reforestación (Horche, Guadalajara) mediante un índice de Productividad Agraria

open access: yesEstudios Geográficos, 2002
[es] La Unión Europea está promoviendo la reforestación en aquellos países, como España, con áreas vulnerables a la degradación y a la desertificación. El propósito de este artículo es delimitar y definir, mediante un método de Evaluación de Tierras, las
C. Hontoria Fernández   +2 more
doaj   +1 more source

T. E. Freeman, 1930 to 2003 [PDF]

open access: yesPhytopathology®, 2004
Dr. Thomas Edward (Ed) Freeman, plant pathologist and turfgrass specialist, died on Tuesday, September 16, 2003 in Gainesville, Florida, at the age of 73. Ed was a native of Mississippi, where he attended primary and secondary schools. He received his bachelor of science degree in biology from Millsap College in 1952. Ed earned his MS and Ph.D.
F W, Zettler, G, Wisler
openaire   +2 more sources

Twisted Boundary Conditions and Matching to the Effective Four Dimensional Theory [PDF]

open access: yes, 1999
Nontrivial twisted boundary conditions associated with extra compact dimensions produce an ambiguity in the value of the four dimensional coupling constants of the renormalizable interactions of the twisted fields' zero modes.
Antoniadis I.   +3 more
core   +2 more sources

Logical–Mathematical Foundations of a Graph Query Framework for Relational Learning

open access: yesMathematics, 2023
Relational learning has attracted much attention from the machine learning community in recent years, and many real-world applications have been successfully formulated as relational learning problems.
Pedro Almagro-Blanco   +2 more
doaj   +1 more source

On the mean square of the zeta-function and the divisor problem [PDF]

open access: yes, 2006
Let $\Delta(x)$ denote the error term in the Dirichlet divisor problem, and $E(T)$ the error term in the asymptotic formula for the mean square of $|\zeta(1/2+it)|$. If $E^*(t) = E(t) - 2\pi\Delta^*(t/2\pi)$ with $\Delta^*(x) = -\Delta(x) + 2\Delta(2x) -
Aleksandar Ivić   +4 more
core   +3 more sources

Stress redistribution due to creep in nimonic 90 ministry of aviation contract no. PD/28/021 report for the period June, 1965 to July, 1966: part 2 [PDF]

open access: yes, 1966
Part I of this report, dated September 1965, deals mainly with the design and construction of the special apparatus to simulate the stress redistribution occurring during the creep of a cooled turbine blade.
Clifton, T. E.
core  

Density and temperature of energetic electrons in the Earth's magnetotail derived from high-latitude GPS observations during the declining phase of the solar cycle [PDF]

open access: yes, 2011
Single relativistic-Maxwellian fits are made to high-latitude GPS-satellite observations of energetic electrons for the period January 2006-November 2010; a constellation of 12 GPS space vehicles provides the observations. The derived fit parameters (for
Cayton, T. E., Denton, Michael
core   +2 more sources

Failure of Universality in Noncompact Lattice Field Theories [PDF]

open access: yes, 1995
The nonuniversal behavior of two noncompact nonlinear sigma models is described. When these theories are defined on a lattice, the behavior of the order parameter (magnetization) near the critical point is sensitive to the details of the lattice ...
Gallivan, T. E., Kapulkin, Arie
core   +2 more sources

Which way do I go? Neural activation in response to feedback and spatial processing in a virtual T-maze [PDF]

open access: yes, 2009
In 2 human event-related brain potential (ERP) experiments, we examined the feedback error-related negativity (fERN), an ERP component associated with reward processing by the midbrain dopamine system, and the N170, an ERP component thought to be ...
Baker, T. E., Holroyd, Clay
core   +1 more source

Identification of microRNAs and their targets associated with fruit-bagging and subsequent sunlight re-exposure in the ‘Granny Smith’ apple exocarp using high-throughput sequencing

open access: yesFrontiers in Plant Science, 2016
Bagged fruits of green apple cultivar ‘Granny Smith’ have been found to turn cardinal red after debagging during fruit-ripening in the Loess Plateau region of China.
Dong eQu   +15 more
doaj   +1 more source

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