Results 11 to 20 of about 2,107,142 (268)

Estimating the Bot Population on Twitter via Random Walk Based Sampling

IEEE Access, 2022
The rise of social bots, which contribute to marketing, political intervention, and the spread of fake news, has been noted. Analysis methods for the characteristics of Twitter bots have been developed for third-party researchers who have access ...
Mei Fukuda, Kazuki Nakajima, Kazuyuki Shudo   +2 more
doaj   +1 more source

Merging Unmanned Aerial Systems (UAS) Imagery and Echo Soundings with an Adaptive Sampling Technique for Bathymetric Surveys

Remote Sensing, 2018
Bathymetric surveying to gather information about depths and underwater terrain is increasingly important to the sciences of hydrology and geomorphology.
Laura V. Alvarez, Hernan A. Moreno, Antonio R. Segales, Tri G. Pham, Elizabeth A. Pillar-Little, Phillip B. Chilson   +5 more
doaj   +1 more source

TEXT CLUSTERING ONLINE LEARNING OPINION DURING COVID-19 PANDEMIC IN INDONESIA USING TWEETS

Barekeng, 2022
To prevent the spread of corona virus, restriction of social activities are implemented including school activities which reaps the pros and cons in community. Opinions about online learning are widely conveyed mainly on Twitter.
Maulida Fajrining Tyas, Anang Kurnia, Agus Mohamad Soleh   +2 more
doaj   +1 more source

A New All-Season Passive Sampling System for Monitoring H2S in Air

The Scientific World Journal, 2002
A new Maxxam All-Season Passive Sampling system for monitoring H2S in air has been developed. This passive sampling system employs the same approaches as the Maxxam All-Season Passive Sampling Systems for monitoring SO2, NO2, and O3 reported previously ...
Hongmao Tang, James Sandeluk, Linda Lin, J. WIlliam Lown   +3 more
doaj   +1 more source

Introduction to Maxxam All-Season Passive Sampling System and Principles of Proper Use of Passive Samplers in the Field Study

The Scientific World Journal, 2001
Maxxam all-season passive sampling system (PASS) is introduced in this paper. The PASS can be used to quantitatively and accurately monitor SO2 , NO2, O 3, and H2 S in air in all weather conditions with flexible exposure times from several hours to ...
Hongmao Tang
doaj   +1 more source

Moving towards a Network of Autonomous UAS Atmospheric Profiling Stations for Observations in the Earth’s Lower Atmosphere: The 3D Mesonet Concept

Sensors, 2019
The deployment of small unmanned aircraft systems (UAS) to collect routine in situ vertical profiles of the thermodynamic and kinematic state of the atmosphere in conjunction with other weather observations could significantly improve weather forecasting
Phillip B. Chilson, Tyler M. Bell, Keith A. Brewster, Gustavo Britto Hupsel de Azevedo, Frederick H. Carr, Kenneth Carson, William Doyle, Christopher A. Fiebrich, Brian R. Greene, James L. Grimsley, Sai Teja Kanneganti, Joshua Martin, Andrew Moore, Robert D. Palmer, Elizabeth A. Pillar-Little, Jorge L. Salazar-Cerreno, Antonio R. Segales, Mark E. Weber, Mark Yeary, Kelvin K. Droegemeier   +19 more
doaj   +1 more source

Aging and the Socioeconomic Life of Older Adults in India

SAGE Open, 2016
The study attempts to approach aging in India from three perspectives, namely, the well-being of an aging individual, the aging household, and the aging population.
Sanjeev Bakshi, Prasanta Pathak
doaj   +1 more source

A sampling theory for infinite weighted graphs [PDF]

Opuscula Mathematica, 2011
We prove two sampling theorems for infinite (countable discrete) weighted graphs \(G\); one example being "large grids of resistors" i.e., networks and systems of resistors.
Palle E. T. Jorgensen
doaj   +1 more source

Positieve Psychologie op Maat

Jeugd in Ontwikkeling
Interventies gebaseerd op positieve psychologie verbeteren het welzijn, maar de effecten op de mentale gezondheid van jongvolwassenen zijn vaak klein. Dit soort interventies zijn mogelijk effectiever als ze op gepersonaliseerde wijze en in het dagelijks
Marieke Schreuder, Leonie Schorrlepp, Dominique Maciejewski, Annelies Schipper, Eeske Van Roekel   +4 more
doaj   +1 more source

For an Archeology of the Digital Iconography

Proceedings, 2017
The aim of the research was to analyze documents on the history of digital image in order to try to identify the main aspects and materials regarding it.
Alberto Sdegno
doaj   +1 more source