Zobrazeno 1 - 10
of 2 564
pro vyhledávání: '"W. Harvey"'
Autor:
Flax, Matthew R., Holmes, W. Harvey
This note shows how to align a periodic signal with its the Fourier transform by means of frequency or time scaling. This may be useful in developing new algorithms, e.g. for pitch estimation. This note also convolves the signals and the frequency ti
Externí odkaz:
http://arxiv.org/abs/2309.09645
Autor:
Michael Mainje, Limbikani Matumba, Jagger J. W. Harvey, Horace Phiri, Aggrey P. Gama, Alexander Phiri, Innocent Phangaphanga, Robert Chizimba, Beatrice Wamey, Patrick Gallagher, Emily Rutto, John F. Leslie
Publikováno v:
Frontiers in Sustainable Food Systems, Vol 8 (2024)
Sustainable school feeding programs (SFPs) in sub-Saharan Africa play a vital role in addressing malnutrition and poor educational outcomes among children. It is critical to contextualize SFPs to local needs and resources, while retaining the twin un
Externí odkaz:
https://doaj.org/article/9c0fa6f1cbe34928b4e8f7c51ed2cada
Publikováno v:
Hydrology and Earth System Sciences, Vol 16, Iss 8, Pp 2703-2708 (2012)
The development of laser-scan techniques provides opportunity for detailed terrain analysis in hydrologic studies. Ground based scans were used to model the ground surface elevation in the area of a stream gauge weir over an area of 240 m2 at a resol
Externí odkaz:
https://doaj.org/article/075d3586467f47a4ada2683f1ad38c1f
Publikováno v:
Scientific Data, Vol 11, Iss 1, Pp 1-12 (2024)
Abstract The concentration of chlorophyll a in phytoplankton and periphyton represents the amount of algal biomass. We compiled an 18-year record (2005–2022) of pigment data from water bodies across the United States (US) to support efforts to deve
Externí odkaz:
https://doaj.org/article/895fa1c5464446ba997e4d505adbb88c
Publikováno v:
Scientific Data, Vol 11, Iss 1, Pp 1-14 (2024)
Abstract Metabolism estimates organic carbon accumulation by primary productivity and removal by respiration. In rivers it is relevant to assessing trophic status and threats to river health such as hypoxia as well as greenhouse gas fluxes. We estima
Externí odkaz:
https://doaj.org/article/308c2dbd5a674f708dbed39eab4d55ff
Evaluation of metrics and thresholds for use in national-scale river harmful algal bloom assessments
Autor:
Sarah M. Stackpoole, Jacob A. Zwart, Jennifer L. Graham, Judson W. Harvey, Noah M. Schmadel, Jennifer C. Murphy
Publikováno v:
Ecological Indicators, Vol 162, Iss , Pp 111970- (2024)
The spatiotemporal distribution of harmful algal blooms (HABs) in rivers remains poorly understood, and there is an urgent need to develop a consistent set of metrics to better document HAB occurrences and forecast future events. Using data from seve
Externí odkaz:
https://doaj.org/article/5519c74abd894d5c9f3dc10207b8cf5b
Autor:
Noah M. Schmadel, Judson W. Harvey, Jay Choi, Sarah M. Stackpoole, Jennifer L. Graham, Jennifer C. Murphy
Publikováno v:
Geophysical Research Letters, Vol 51, Iss 5, Pp n/a-n/a (2024)
Abstract Measurement of planktonic chlorophyll‐a—a proxy for algal biomass—in rivers may represent local production or algae transported from upstream, confounding understanding of algal bloom development in flowing waters. We modeled 3 years o
Externí odkaz:
https://doaj.org/article/44fc2121a1444e889421e83af74b2c5a
Autor:
Joanna R. Blaszczak, Lauren E. Koenig, Francine H. Mejia, Lluís Gómez‐Gener, Christopher L. Dutton, Alice M. Carter, Nancy B. Grimm, Judson W. Harvey, Ashley M. Helton, Matthew J. Cohen
Publikováno v:
Limnology and Oceanography Letters, Vol 8, Iss 3, Pp 453-463 (2023)
Abstract Hypoxia in coastal waters and lakes is widely recognized as a detrimental environmental issue, yet we lack a comparable understanding of hypoxia in rivers. We investigated controls on hypoxia using 118 million paired observations of dissolve
Externí odkaz:
https://doaj.org/article/77d86f33aed94476b0c7fd58f6d12f35
Autor:
Laura A. Cagle, Nicole I. Stacy, John W. Harvey, Martine de Wit, Laurie Adler, Michael Walsh, Robert Bonde, Tracy Stokol
Publikováno v:
Frontiers in Veterinary Science, Vol 10 (2023)
Manatees (Antillean-, Amazonian, and African-) and dugongs belong to the Order Sirenia, and when combined with elephants and rock hyraxes, form the Paenungulata. A bilobed mononuclear cell has previously been identified in elephants and rock hyraxes,
Externí odkaz:
https://doaj.org/article/ea7e341e06304bb78606b853973b40e0
Publikováno v:
Frontiers in Water, Vol 5 (2023)
River corridors integrate the active channels, geomorphic floodplain and riparian areas, and hyporheic zone while receiving inputs from the uplands and groundwater and exchanging mass and energy with the atmosphere. Here, we trace the development of
Externí odkaz:
https://doaj.org/article/8d07d6ed43e0453fbebdf4dfd95a61f8