Results 21 to 30 of about 3,446,366 (305)

The Estimation of Regional Crop Yield Using Ensemble-Based Four-Dimensional Variational Data Assimilation

open access: yesRemote Sensing, 2014
To improve crop model performance for regional crop yield estimates, a new four-dimensional variational algorithm (POD4DVar) merging the Monte Carlo and proper orthogonal decomposition techniques was introduced to develop a data assimilation strategy ...
Zhiwei Jiang   +5 more
doaj   +1 more source

Remote Sensing Based Yield Estimation of Rice (Oryza Sativa L.) Using Gradient Boosted Regression in India

open access: yesRemote Sensing, 2021
Accurate and spatially explicit yield information is required to ensure farmers’ income and food security at local and national levels. Current approaches based on crop cutting experiments are expensive and usually too late for timely income ...
Ponraj Arumugam   +3 more
doaj   +1 more source

Wheat Yield Estimation from NDVI and Regional Climate Models in Latvia

open access: yesRemote Sensing, 2020
Wheat yield variability will increase in the future due to the projected increase in extreme weather events and long-term climate change effects. Currently, regional agricultural statistics are used to monitor wheat yield.
Astrid Vannoppen   +17 more
doaj   +1 more source

Estimating component yield for CLT production [PDF]

open access: yes2017 IEEE International Conference on Industrial Engineering and Engineering Management (IEEM), 2017
The emergence of cross-laminated timber (CLT) for building construction in North America may provide an additional and possibly more valuable product market for hardwood logs. Using the RaySaw sawing and ROMI rough mill simulators and a digital databank of laser-scanned low-grade yellow-poplar (Liriodendron tulipifera) logs, we examine the yield ...
Buehlmann, Urs, Thomas, R. Edward
openaire   +2 more sources

Gaussian estimation and forecasting of the U.K. yield curve with multi-factor continuous-time models [PDF]

open access: yes, 2017
In this paper we will estimate the term structure of daily U.K. interest rates using a range of more flexible continuous-time models. A multivariate framework is employed for the dynamic estimation and forecasting of four classic models over the eventful
Tunaru, Diana E.   +2 more
core   +1 more source

ACCURACY OF MILK YIELD ESTIMATION IN DAIRY CATTLE FROM MONTHLY RECORD BY REGRESSION METHOD [PDF]

open access: yes, 2009
This experiment was conducted to estimate the actual milk yield and to compare the estimation accuracy of cumulative monthly record to actual milk yield by regression method.
Kurnianto, E. (E)   +7 more
core   +1 more source

Evaluating Sugarcane Yield Estimation in Thailand Using Multi-Temporal Sentinel-2 and Landsat Data Together with Machine-Learning Algorithms

open access: yesLand
Updated and accurate crop yield maps play a key role in the agricultural environment. Their application enables the support for sustainable agricultural practices and the formulation of effective strategies to mitigate the impacts of climate change ...
Jaturong Som-ard   +8 more
doaj   +1 more source

Estimates of cluster-impact fusion yields [PDF]

open access: yesPhysical Review A, 1990
We present several theoretical estimates of D+D fusion rates for heavy-water molecular clusters impacting on TiD targets. Our considerations range from the simple thick-target yield to single- and multiple-deuteron knock-on to thermonuclear and thermal-spike models; detailed molecular-dynamics simulations are also presented.
Carraro, C.   +3 more
openaire   +3 more sources

Think sink, not source: how vertical farming’s potential is limited by crop breeding

open access: yesFrontiers in Plant Science
Vertical farming (VF) could play a role in addressing some global food challenges, yet it requires higher crop yields and lower costs to become viable at large scales.
Gertjan Meeuws   +5 more
doaj   +1 more source

Assimilating Soil Moisture Retrieved from Sentinel-1 and Sentinel-2 Data into WOFOST Model to Improve Winter Wheat Yield Estimation

open access: yesRemote Sensing, 2019
Crop yield estimation at a regional scale over a long period of time is of great significance to food security. In past decades, the integration of remote sensing observations and crop growth models has been recognized as a promising approach for crop ...
Wen Zhuo   +8 more
doaj   +1 more source

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