Results 31 to 40 of about 135,794 (322)

Energy Considerations in a Model of Nematode Sperm Crawling

open access: yesMathematical Biosciences and Engineering, 2006
In this paper we propose a mathematical model for nematode spermcell crawling. The model takes into account both force and energybalance in the process of lamellipodium protrusion and cellnucleus drag. It is shown that by specifying the (possiblyvariable)
Borys V. Bazaliy   +3 more
doaj   +1 more source

Tuning gastropod locomotion: Modeling the influence of mucus rheology on the cost of crawling [PDF]

open access: yes, 2006
Common gastropods such as snails crawl on a solid substrate by propagating muscular waves of shear stress on a viscoelastic mucus. Producing the mucus accounts for the largest component in the gastropod's energy budget, more than twenty times the amount ...
A. E. Hosoi   +26 more
core   +2 more sources

Crawling EDGAR

open access: yesThe Spanish Review of Financial Economics, 2012
While our kids may think this paper is about spiders, it is, unfortunately, about rms in the United States reporting relevant business information to the Securities and Exchange Commission (SEC). The paper is meant to serve as a primer for economists in the computing details of searching for information in the Internet.
Diego, Garcia, Norli, Øyvind
openaire   +2 more sources

The role of locomotion in psychological development

open access: yesFrontiers in Psychology, 2013
The psychological revolution that follows the onset of independent locomotion in the latter half of the infant’s first year provides one of the best illustrations of the intimate connection between action and psychological processes.
David Ian Anderson   +7 more
doaj   +1 more source

A Semantics-Based Clustering Approach for Online Laboratories Using K-Means and HAC Algorithms

open access: yesMathematics, 2023
Due to the availability of a vast amount of unstructured data in various forms (e.g., the web, social networks, etc.), the clustering of text documents has become increasingly important.
Saad Hikmat Haji   +2 more
doaj   +1 more source

Designing an Open Source Virtual Assistant

open access: yesProceedings, 2020
A chatbot is a type of agent that allows people to interact with an information repository using natural language. Nowadays, chatbots have been incorporated in the form of conversational assistants on the most important mobile and desktop platforms.
Anxo Pérez   +2 more
doaj   +1 more source

An Earthworm-Inspired Soft Crawling Robot Controlled by Friction

open access: yes, 2017
We present the modeling, design, fabrication and feedback control of an earthworm-inspired soft robot capable of crawling on surfaces by actively manipulating the frictional force between its body and the surface.
Calderón, Ariel A.   +2 more
core   +1 more source

Whittle Index Policy for Crawling Ephemeral Content [PDF]

open access: yes, 2015
We consider a task of scheduling a crawler to retrieve content from several sites with ephemeral content. A user typically loses interest in ephemeral content, like news or posts at social network groups, after several days or hours. Thus, development of
Avrachenkov, Konstantin, Borkar, Vivek
core   +5 more sources

On the Swimming of \textit{Dictyostelium} amoebae

open access: yes, 2010
Traditionally, the primary mode for locomotion of amoeboid cells was thought to be crawling on a substrate. Recently, it has been experimentally shown that \textit{Dictostelium} amoeba and neutrophils can also swim in a directed fashion.
A. J. Bae, E. Bodenschatz, Westendorf
core   +2 more sources

Crawling Water Beetles of Wisconsin (Coleoptera: Haliplidae) [PDF]

open access: yes, 2017
(excerpt) Haliplidae are smail water beetles, less than 5 mm long, that frequently occur in abundance in ponds, marshes, sloughs, and swamps and also along the margins of slow streams or lakes where there is not severe wave action.
Brigham, Warren U, Hilsenhoff, William L
core   +2 more sources

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