Results 41 to 50 of about 138,771 (325)

The TREC2001 video track: information retrieval on digital video information [PDF]

open access: yes, 2002
The development of techniques to support content-based access to archives of digital video information has recently started to receive much attention from the research community.
Alan F. Smeaton   +9 more
core   +7 more sources

Large scale assessment of the production process and rice yield gap analysis by comparative performance analysis and boundary-line analysis methods

open access: yesItalian Journal of Agronomy, 2019
To reduce the yield gap, specifying yield constraints in a particular area is necessary. A complete yield gap assessment method must provide information regarding potential yield, actual yield, and causes of the gap and their importance.
Ahmad Gorjizad   +3 more
doaj   +1 more source

Closing the yield gap of soybean (Glycine max (L.) Merril) in Southern Africa: a case of Malawi, Zambia, and Mozambique

open access: yesFrontiers in Agronomy, 2023
IntroductionSmallholder farmers in Sub-Saharan Africa (SSA) are increasingly producing soybean for food, feed, cash, and soil fertility improvement. Yet, the difference between the smallholder farmers’ yield and either the attainable in research fields ...
John Okoth Omondi   +9 more
doaj   +1 more source

Preliminary Design of Reactive Distillation Columns [PDF]

open access: yes, 2005
A procedure that combines feasibility analysis, synthesis and design of reactive distillation columns is introduced. The main interest of this methodology lies on a progressive introduction of the process complexity.
Agreda   +42 more
core   +2 more sources

Agrometeorological analysis of the soybean potentiality in an Amazonian environment

open access: yesPesquisa Agropecuária Tropical, 2019
The use of crop models that integrate soil, climate, cultivar and management information may broaden the understanding of the interactions between soybean cropping system and local climate variability.
Marcus José Alves de Lima   +4 more
doaj   +1 more source

Accurate Extra-Galactic Distances and Dark Energy: Anchoring the Distance Scale with Rotational Parallaxes [PDF]

open access: yes, 2006
We investigate how the uncertainty on the Hubble constant (H_0) affects the uncertainty in the Equation of State (EOS) of Dark Energy and the total density of the Universe (Omega_tot). We use the approximate relations between the cosmological parameters [
Brunthaler, R. P. Olling
core   +5 more sources

Quantum metrology with full and fast quantum control [PDF]

open access: yes, 2017
We establish general limits on how precise a parameter, e.g. frequency or the strength of a magnetic field, can be estimated with the aid of full and fast quantum control.
Dür, Wolfgang   +3 more
core   +3 more sources

Why should space-time variability of rainfall be considered in precision agriculture for soybean in Piracicaba, São Paulo state? [PDF]

open access: yesScientia Agricola
Brazil ranks among the world's largest soybean producers; however, significant gaps in crop yield still exist, primarily linked to weather conditions. This study quantifies rainfall spatial variability using two dense networks of rain gauges and examines
Thais Letícia dos Santos   +5 more
doaj   +1 more source

Predicting spring wheat yields based on water use-yield production function in a semi-arid climate

open access: yesSpanish Journal of Agricultural Research, 2019
Grain yield of spring wheat (Triticum aestivum L.) fluctuates greatly in Western Loess Plateau of China due to limited and highly variable precipitation.
Funian Zhao   +4 more
doaj   +1 more source

Modeling of corn yield in Brazil as a function of meteorological conditions and technological level [PDF]

open access: yesPesquisa Agropecuária Brasileira, 2017
: The objective of this work was to develop and evaluate a method for estimating corn yield using a minimum number of parameters and limited information about crop management.
José Eduardo Boffino de Almeida Monteiro   +3 more
doaj   +1 more source

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