Zobrazeno 1 - 10
of 239
pro vyhledávání: '"Ryan R. Jensen"'
Autor:
Ian Turner, Ruth Kerry, Ryan R. Jensen, Elisa A. Flint, Jeffrey Svedin, Neil C. Hansen, Bryan Hopkins, Keegan Hammond
Publikováno v:
Geocarto International, Vol 0, Iss 0 (2023)
Variable rate irrigation (VRI) is used to save water whilst maintaining crop yields in semiarid regions. A key problem is to be able to inexpensively determine spatial patterns in soil moisture so that VRI zones can be defined. In Southern Idaho, USA
Externí odkaz:
https://doaj.org/article/aef164ecc7a9460a93273217566aa800
Autor:
Katrina Pedersen, Ryan R. Jensen, Lucas K. Hall, Mitchell C. Cutler, Mark K. Transtrum, Kent L. Gee, Shane V. Lympany
Publikováno v:
Applied Sciences, Vol 13, Iss 14, p 8123 (2023)
Applying machine learning methods to geographic data provides insights into spatial patterns in the data as well as assists in interpreting and describing environments. This paper investigates the results of k-means clustering applied to 51 geospatia
Externí odkaz:
https://doaj.org/article/fdab04343939451ab0b028653bd0ac39
Autor:
Bradley D. Hunter, Daanish Hoda, Andy Nguyen, Launce Gouw, Bryan Huber, Ryan R. Jensen, Justine Preedit, Andrew Evens, Esther Huang, Jiyeon Park, Dennis L. Cooper
Publikováno v:
Experimental Hematology & Oncology, Vol 11, Iss 1, Pp 1-3 (2022)
Abstract Chimeric antigen receptor (CAR) T-cell therapy has revolutionized the treatment of relapsed/refractory B-cell malignancies. However, there is no data on the safety and efficacy of CAR T-cell therapy in patients with end stage renal disease (
Externí odkaz:
https://doaj.org/article/a04ca38722904367887186044b77dc43
Autor:
Ruth Kerry, Ben Ingram, Keegan Hammond, Samantha R. Shumate, David Gunther, Ryan R. Jensen, Steve Schill, Neil C. Hansen, Bryan G. Hopkins
Publikováno v:
Agronomy, Vol 13, Iss 5, p 1267 (2023)
Irrigated turfgrass is a major crop in urban areas of the drought-stricken Western United States. A considerable proportion of irrigation water is wasted through the use of conventional sprinkler systems. While smart sprinkler systems have made progr
Externí odkaz:
https://doaj.org/article/710851e628bf44d2b22f5046db8d07bf
Autor:
Keegan Hammond, Ruth Kerry, Ryan R. Jensen, Ross Spackman, April Hulet, Bryan G. Hopkins, Matt A. Yost, Austin P. Hopkins, Neil C. Hansen
Publikováno v:
Agronomy, Vol 13, Iss 5, p 1289 (2023)
This study examines the use of leaf area index (LAI) to inform variable-rate irrigation (VRI) for irrigated alfalfa (Medicago sativa). LAI is useful for predicting zone-specific evapotranspiration (ETc). One approach toward estimating LAI is to utili
Externí odkaz:
https://doaj.org/article/d12801a7a69d4afc90e038b59afe7b79
Autor:
Elisa A. Flint, Bryan G. Hopkins, Jeffery D. Svedin, Ruth Kerry, Matthew J. Heaton, Ryan R. Jensen, Colin S. Campbell, Matt A. Yost, Neil C. Hansen
Publikováno v:
Agronomy, Vol 13, Iss 4, p 1125 (2023)
Understanding spatial and temporal dynamics of soil water within fields is critical for effective variable rate irrigation (VRI) management. The objectives of this study were to develop VRI zones, manage irrigation rates within VRI zones, and examine
Externí odkaz:
https://doaj.org/article/1dbbb35b21e64bf5a73b9bb8b060335e
Publikováno v:
GIScience & Remote Sensing, Vol 56, Iss 2, Pp 309-322 (2019)
Hardin and Jensen (2011) presented six challenges to using small Unmanned Aerial Systems (sUAS) for environmental remote sensing: challenge of the hostile flying environment, challenge of power, challenge of available sensors, challenge of payload we
Externí odkaz:
https://doaj.org/article/8a7090a1c94b4d3ca495606f3c9507e9
Autor:
Darrell B. Roundy, April Hulet, Bruce A. Roundy, Ryan R. Jensen, Jordan B. Hinkle, Leann Crook, Steven L. Petersen
Publikováno v:
AIMS Environmental Science, Vol 3, Iss 4, Pp 765-777 (2016)
Expansion of Pinus L. (pinyon) and Juniperus L. (juniper) (P-J) trees into sagebrush (Artemisia L.) steppe communities can lead to negative effects on hydrology, loss of wildlife habitat, and a decrease in desirable understory vegetation. Tree reduct
Externí odkaz:
https://doaj.org/article/05544fa739124a759f87be8f4082688f
Publikováno v:
Drones, Vol 4, Iss 1, p 6 (2020)
In situ measurements of sagebrush have traditionally been expensive and time consuming. Currently, improvements in small Unmanned Aerial Systems (sUAS) technology can be used to quantify sagebrush morphology and community structure with high resoluti
Externí odkaz:
https://doaj.org/article/cf8a5761c9774d698ad91a3bc7c53460
Publikováno v:
Papers in Applied Geography. 6:72-83
Small unmanned aircraft systems (sUAS) offer key benefits over manned aircraft and satellite platforms used for remote sensing research, such as high spatial resolution, portability, simplicity of ...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6993cc07e96713eef7cd54a53d88d2e4
https://doi.org/10.1080/23754931.2020.1716385
https://doi.org/10.1080/23754931.2020.1716385