Results 71 to 80 of about 105,700 (306)

I comportamenti relazionali nell’era dei social network: indagine sull’utilizzo di Facebook tra gli adolescenti di una comunità scolastica

open access: yesHumanities, 2018
Il continuo evolversi della tecnologia ha portato, oltre all’aumento dei classici mass-media, allo sviluppo di un mezzo di informazione interattivo che è internet. Proprio attraverso internet è sorto un innovativo metodo di comunicazione che ha coinvolto
Giuseppe Avena
doaj   +1 more source

Transient random walk in symmetric exclusion: limit theorems and an Einstein relation [PDF]

open access: yesarXiv, 2011
We consider a one-dimensional simple symmetric exclusion process in equilibrium, constituting a dynamic random environment for a nearest-neighbor random walk that on occupied/vacant sites has two different local drifts to the right. We construct a renewal structure from which a LLN, a functional CLT and large deviation bounds for the random walk under ...
arxiv  

Evaluating the potential for snowmelt phosphorus losses from perennial forage crops

open access: yesJournal of Environmental Quality, EarlyView.
Abstract In cold regions, there is concern that losses of P with snowmelt runoff following freeze and thaw of vegetation may be greater from perennial forages relative to annual crops. We evaluate the drivers of P losses with snowmelt runoff over a network of field‐scale small watersheds in Manitoba, Canada, following annual crops (59 site‐years ...
Henry Wilson   +4 more
wiley   +1 more source

Auxin-induced growth inhibition a natural consequence of two-point attachment [PDF]

open access: yes, 1952
It is characteristic of a great number of biologically active substances that the responses which they elicit are twofold, low concentrations of the material promoting a particular activity, and higher concentrations inhibiting it.
Bonner, James   +2 more
core  

Potencial nutricional de harinas de quinua (chenopodium quinoa w) variedad piartal en los andes Colombianos segunda parte

open access: yesBiotecnología en el Sector Agropecuario y Agroindustrial, 2015
Ésta es la segunda entrega de un estudio exploratorio sobre la quinua varie- dad Piartal, cultivada en el sur del departamento de Nariño, presenta infor- mación sobre características físicas y propiedades nutricionales de un pro- ducto resultante de ...
Clara Forero   +3 more
doaj  

Synchronous collaborative information retrieval with relevance feedback [PDF]

open access: yes, 2006
Collaboration has been identified as an important aspect in information seeking. People meet to discuss and share ideas and through this interaction an information need is quite often identified.
Foley, Colum   +2 more
core   +1 more source

Resolving abrupt frontal gradients in zooplankton community composition and marine snow fields with an autonomous Zooglider

open access: yesLimnology and Oceanography, EarlyView.
Abstract An autonomous Zooglider navigated across the California Current Front into low salinity, minty waters characteristic of the California Current proper in both summers of 2019 and 2021. Diving to 400 m depth, Zooglider transited another near‐surface frontal gradient somewhat inshore. These frontal gradients were generally associated with changes
Sven Gastauer, Mark D. Ohman
wiley   +1 more source

Sitobion avenae

open access: yes
224. Sitobion avenae (Fabricius, 1775) Host plants Brassica napus (Brassicaceae), Avena sativa, Hordeum vulgare, Oryza sativa, Pennisetum glaucum (L.) R.Br., P. typhoideum, Sorghum bicolor, S. halepense, S. sudanense, Triticum aestivum, T. durum Desf., Zea mays (Poaceae), and unidentified plants of Cucurbitaceae, Polygonaceae, Rosaceae, and Solanaceae.
Hassan, Muhammad Asghar   +11 more
openaire   +1 more source

Random walks in cooling random environments [PDF]

open access: yesarXiv, 2016
We propose a model of a one-dimensional random walk in dynamic random environment that interpolates between two classical settings: (I) the random environment is sampled at time zero only; (II) the random environment is resampled at every unit of time. In our model the random environment is resampled along an increasing sequence of deterministic times.
arxiv  

Sitobion avenae

open access: yes, 2015
Published as part of Albrecht, Anders Christian, 2015, Identification guide to Nordic aphids associated with mosses, horsetails and ferns (Bryophyta, Equisetophyta, Polypodiophyta) (Insecta, Hemiptera, Aphidoidea), pp. 1-55 in European Journal of Taxonomy 145 on page 33, DOI: 10.5852/ejt.2015.145, http://zenodo.org/record ...
openaire   +2 more sources

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