Results 41 to 50 of about 71,370 (231)

On subset least squares estimation and prediction in vector autoregressive models with exogenous variables

open access: yesCanadian Journal of Statistics, EarlyView.
Abstract We establish the consistency and the asymptotic distribution of the least squares estimators of the coefficients of a subset vector autoregressive process with exogenous variables (VARX). Using a martingale central limit theorem, we derive the asymptotic normal distribution of the estimators. Diagnostic checking is discussed using kernel‐based
Pierre Duchesne   +2 more
wiley   +1 more source

Typification of Carex helodes Link, Carex laevigata Sm. and Carex patula Link ex Schkuhr (Cyperaceae) [PDF]

open access: yes, 2009
The name of Carex helodes Link is neotypified. This species has been erroneously considered as a synonym of Carex laevigata Sm. and Carex patula Schkuhr, which the names are also lectotypified.
Escudero Lirio, Marcial   +2 more
core  

Carex castroviejoi Luceño & Jiménez Mejías (Cyperaceae), a new species from North Greek mountains [PDF]

open access: yes, 2009
Una nueva especie de ciperáceas de las montañas del norte de Grecia denominada con el nombre del Dr. Santiago Castroviejo Bolívar -Flora Ibérica - la obra más importante sobre la historia de la botánica en ...
Jiménez-Mejías, Pedro   +1 more
core   +4 more sources

Hyperspectral classification of Cyperus esculentus clones and morphologically similar weeds [PDF]

open access: yes, 2020
Cyperus esculentus (yellow nutsedge) is one of the world's worst weeds as it can cause great damage to crops and crop production. To eradicate C. esculentus, early detection is key-a challenging task as it is often confused with other Cyperaceae and ...
Cool, Simon R.   +4 more
core   +1 more source

Developing a macroecology for human‐altered ecosystems

open access: yesEcography, EarlyView.
Although anthropogenically‐induced ecological disruptions are fundamentally important in defining ecosystem properties, they are largely overlooked by macroecological theory. Anthropogenic disruptions and their effects are generally not comparable to one another, nor to disturbances that are part of natural disturbance regimes.
Erica A. Newman   +7 more
wiley   +1 more source

Canadians’ knowledge of cancer risk factors and belief in cancer myths

open access: yesBMC Public Health
Background Many untrue statements about cancer prevention and risks are circulating. The objective of this study was to assess Canadians’ awareness of known cancer risk factors and cancer myths (untruths or statements that are not completely true), and ...
E Rydz   +6 more
doaj   +1 more source

Butterfly (Lepidoptera: Lycaenidae, Nymphalidae, and Satyridae) Faunas of Three Peatland Habitat Types in the Lake Superior Drainage Basin of Wisconsin [PDF]

open access: yes, 2018
The butterflies which complete their entire life cycle within peatland habitats were documented in the Lake Superior drainage basin of northwestern Wisconsin.
Nekola, Jeffrey C
core   +2 more sources

Human appreciation of flower colours as cultural ecosystem service in grasslands: A methodological approach

open access: yesGrassland Research, EarlyView.
This literature‐based method estimates human appreciation of flower colours on target grasslands. Step 1: search literature sources (floristic surveys, national floras, web datasets and preference studies). Step 2: flower trait extraction (flower colour and area, flowering period and human colour appreciation scale).
Marco Bianchini   +4 more
wiley   +1 more source

Freshwater Wetlands Inventory Outreach Activities, West, M [PDF]

open access: yes, 2003
West Environmental, Inc. together with Carex Ecosystem Sciences and Doucet Survey, under contract with the NH Estuaries Project, have identified and mapped potential freshwater wetland mitigation opportunities in nineteen (19) communities that border ...
Carex Ecosystem Sciences   +1 more
core   +1 more source

Effect of Carex rostrata on seasonal and interannual variability in peatland methane emissions [PDF]

open access: yes, 2014
Peatlands are a large natural source of atmospheric methane (CH4), and the sedge Carex rostrata plays a critical role in the production, oxidation, and transport of CH4 in these systems.
Bubier, Jill L.   +3 more
core   +2 more sources

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