Results 41 to 50 of about 28,765 (271)

Zigzag turning preference of freely crawling cells. [PDF]

open access: yesPLoS ONE, 2011
The coordinated motion of a cell is fundamental to many important biological processes such as development, wound healing, and phagocytosis. For eukaryotic cells, such as amoebae or animal cells, the cell motility is based on crawling and involves a ...
Taeseok Daniel Yang   +5 more
doaj   +1 more source

A Semantic Focused Web Crawler Based on a Knowledge Representation Schema

open access: yesApplied Sciences, 2020
The Web has become the main source of information in the digital world, expanding to heterogeneous domains and continuously growing. By means of a search engine, users can systematically search over the web for particular information based on a text ...
Julio Hernandez   +2 more
doaj   +1 more source

Efficient Sentiment-Aware Web Crawling Methods for Constructing Sentiment Dictionary

open access: yesIEEE Access, 2021
In traditional web crawling, all web pages crawled are first stored to databases. As a result, this approach can store unnecessary web pages and requires additional running time for the construction of a sentiment dictionary in a particular domain ...
Byung-Won On   +5 more
doaj   +1 more source

CRAWLING: a Crowdsourcing Algorithm on Wheels for Smart Parking [PDF]

open access: yesarXiv, 2022
We present the principled design of CRAWLING: a CRowdsourcing Algorirthm on WheeLs for smart parkING. CRAWLING is an in-car service for the routing of connected cars. Specifically, cars equipped with our service are able to {\em crowdsource} data from third-parties, including other cars, pedestrians, smart sensors and social media, in order to fulfill ...
arxiv  

Crawling and turning in a minimal reaction-diffusion cell motility model: coupling cell shape and biochemistry [PDF]

open access: yesPhys. Rev. E 95, 012401 (2017), 2016
We study a minimal model of a crawling eukaryotic cell with a chemical polarity controlled by a reaction-diffusion mechanism describing Rho GTPase dynamics. The size, shape, and speed of the cell emerge from the combination of the chemical polarity, which controls the locations where actin polymerization occurs, and the physical properties of the cell,
arxiv   +1 more source

Partitioning and Coarsening Dynamics of Precipitate‐Strengthened Cr‐Si Alloys: The Role of Ge, Pt, and Mo

open access: yesAdvanced Engineering Materials, EarlyView.
The microstructure of Cr‐rich Cr‐Si‐alloys is maintained by alloying with Ge, Pt, and Mo. The effects of these elements on A15‐phase fraction, partitioning, microstructural stability, grain size, and hardness are combinable. Molybdenum is found to be the most promising alloying element for microstructural stability during high‐temperature exposure.
Anke Silvia Ulrich   +6 more
wiley   +1 more source

Human hands-and-knees crawling movement analysis based on time-varying synergy and synchronous synergy theories

open access: yesMathematical Biosciences and Engineering, 2019
This paper aims to investigate human hands-and-knees crawling movement from the aspect of synchronous (SYN) and time-varying (TV) muscle synergy analysis. Nine healthy children and 11 children with cerebral palsy were recruited.
Teng Li   +4 more
doaj   +1 more source

Material Challenges and Alloy Selection for Particle/s‐CO2 Heat Exchangers in Concentrated Solar Power Systems

open access: yesAdvanced Engineering Materials, EarlyView.
Combining supercritical CO2 (s‐CO2) cycles with particle‐based heat transfer media holds great potential in concentrated solar power plants but poses enormous material challenges. The particle/s‐CO2 heat exchanger must withstand extreme conditions, including high temperatures, pressures, CO2 corrosion, and erosion.
Mathias Christian Galetz   +5 more
wiley   +1 more source

Do We Really Need to Catch Them All? A New User-Guided Social Media Crawling Method

open access: yesEntropy, 2017
[-15]With the growing use of popular social media services like Facebook and Twitter it is challenging to collect all content from the networks without access to the core infrastructure or paying for it.
Fredrik Erlandsson   +3 more
doaj   +1 more source

Tree-based Focused Web Crawling with Reinforcement Learning [PDF]

open access: yesarXiv, 2021
A focused crawler aims at discovering as many web pages relevant to a target topic as possible, while avoiding irrelevant ones. Reinforcement Learning (RL) has been utilized to optimize focused crawling. In this paper, we propose TRES, an RL-empowered framework for focused crawling.
arxiv  

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