Zobrazeno 1 - 10
of 18
pro vyhledávání: '"Joseph S Dvorak"'
Publikováno v:
Sensors, Vol 20, Iss 18, p 5375 (2020)
Collecting remotely sensed spectral data under varying ambient light conditions is challenging. The objective of this study was to test the ability to classify grayscale targets observed by portable spectrometers under varying ambient light condition
Externí odkaz:
https://doaj.org/article/c638a85e78a3410699cd203a87ccf4bc
Autor:
Joseph S. Dvorak, L. Felipe Pampolini, Josh J. Jackson, Hassan Seyyedhasani, Michael P. Sama, Ben Goff
Publikováno v:
Transactions of the ASABE. 64:63-72
HighlightsThe canopy height distributions from photogrammetry were mostly Gaussian distributions.The mean canopy height and standard deviation from photogrammetry can be used to predict yield and nutritive values.Including average field maturity and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9cfd620c6bb6bf1dd0663a0a68188e1e
https://doi.org/10.13031/trans.13769
https://doi.org/10.13031/trans.13769
Publikováno v:
Computers and Electronics in Agriculture. 156:523-529
This project considered the field efficiency of routes created using two routing algorithms, a fast Clarke-Wright heuristic and a slower tabu search meta-heuristic, in 100 different field shapes with 1200 different field work scenarios for each algor
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6dcf378cdeccd25b813dcbf64d5de222
https://doi.org/10.1016/j.compag.2018.12.002
https://doi.org/10.1016/j.compag.2018.12.002
Publikováno v:
Remote Sensing, Vol 13, Iss 2487, p 2487 (2021)
The canopy of alfalfa reveals useful information for managing this important forage crop, but manual measurements of alfalfa canopies are time consuming and impractical at field-scale. Photogrammetry processing with images taken from Unmanned Aerial
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9d8b4243750833beecede34a746435fe
https://www.mdpi.com/2072-4292/13/13/2487
https://www.mdpi.com/2072-4292/13/13/2487
Publikováno v:
Sensors, Vol 20, Iss 5375, p 5375 (2020)
Sensors (Basel, Switzerland)
Sensors
Volume 20
Issue 18
Sensors (Basel, Switzerland)
Sensors
Volume 20
Issue 18
Collecting remotely sensed spectral data under varying ambient light conditions is challenging. The objective of this study was to test the ability to classify grayscale targets observed by portable spectrometers under varying ambient light condition
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cc20965f63404ec21cf267d1e730dedd
https://www.mdpi.com/1424-8220/20/18/5375
https://www.mdpi.com/1424-8220/20/18/5375
Publikováno v:
Computers and Electronics in Agriculture. 153:313-317
The companies that operate grain delivery locations use a variety of methods to discount grain that is delivered with high moisture levels which are often difficult for producers to determine. This project analyzed 24 grain discount schedules represe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::273bff8fa803e33694dba3d894874e94
https://doi.org/10.1016/j.compag.2018.06.038
https://doi.org/10.1016/j.compag.2018.06.038
Autor:
Hasan Seyyedhasani, Joseph S. Dvorak
Publikováno v:
Biosystems Engineering. 171:63-77
Agricultural field work within even a single field is a dynamic, complex process, and farm managers are often forced to deviate from their initial plans for working a field as work proceeds. Unexpected field conditions or machinery management challen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d5fc5724c0e10b75da9afa7c4a461b02
https://doi.org/10.1016/j.biosystemseng.2018.04.003
https://doi.org/10.1016/j.biosystemseng.2018.04.003
Autor:
Hasan Seyyedhasani, Joseph S. Dvorak
Publikováno v:
Biosystems Engineering. 169:1-10
Agricultural producers seek to complete their field work operations as quickly as possible. This is achievable through the simultaneous use of multiple vehicles for an operation. However, path allocation and scheduling then must be considered. Transf
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::df65c8d6ac0797b548c3d7a1c818fb7d
https://doi.org/10.1016/j.biosystemseng.2018.01.006
https://doi.org/10.1016/j.biosystemseng.2018.01.006
Autor:
Joseph S. Dvorak, Hasan Seyyedhasani
Publikováno v:
Computers and Electronics in Agriculture. 134:142-150
Optimization focused on field completion times rather than total machine time.Optimization obtained by transformation into a Vehicle Routing Problem.Significant reductions possible with meta-heuristic procedures like Tabu Search.Tabu Search is more i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e8bdfe6a80146ca99d303464cc23f061
https://doi.org/10.1016/j.compag.2016.11.010
https://doi.org/10.1016/j.compag.2016.11.010
Publikováno v:
Applied Engineering in Agriculture. 32:539-547
The objective of this study was to characterize the expected position accuracy when using popular mobile devices for location-based agricultural decision-making activities. This study utilized Android-based Nexus 7 tablets and tested the operation of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9a17aee1be107cd5ab1b95daa5627eaf
https://doi.org/10.13031/aea.32.11351
https://doi.org/10.13031/aea.32.11351