Searched for: +
(1 - 20 of 24)

Pages

List view
Grid view
document
Moura, Giovane C. M. (author), Davids, Marco (author), Schutijser, Caspar (author), Hesselman, Cristian (author), Heidemann, John (author), Smaragdakis, G. (author)
Time synchronization is of paramount importance on the Internet, with the Network Time Protocol (NTP) serving as the primary synchronization protocol. The NTP Pool, a volunteer-driven initiative launched two decades ago, facilitates connections between clients and NTP servers. Our analysis of root DNS queries reveals that the NTP Pool has...
journal article 2024
document
Eisma, J.A. (author), Schoups, G.H.W. (author), Davids, Jeffrey C. (author), van de Giesen, N.C. (author)
High-quality citizen science data can be instrumental in advancing science toward new discoveries and a deeper understanding of under-observed phenomena. However, the error structure of citizen scientist (CS) data must be well-defined. Within a citizen science program, the errors in submitted observations vary, and their occurrence may depend on...
journal article 2023
document
Moura, Giovane C. M. (author), Davids, Marco (author), Schutijser, Caspar (author), Hesselman, Cristian (author), Heidemann, John (author), Smaragdakis, G. (author)
Time synchronization is crucial on the Internet, and the Network Time Protocol<br/>(NTP) serves as the primary synchronization protocol. The NTP Pool, a<br/>volunteer-driven project introduced 20 years ago, connects clients with NTP servers. Our analysis of Root DNS queries reveals the NTP Pool's widespread use as the most popular time service....
report 2023
document
Hessels, T.M. (author), Davids, Jeffrey C. (author), Bastiaanssen, W.G.M. (author)
Strategic planning of water management at the river-basin scale requires (1) measurement and accounting of individual hydrological processes, (2) quantification of water resources, and (3) their optimal allocation. Scalable Water Balances from Earth Observations (SWEO) is an open-access parameterization enabling automated reporting of water...
journal article 2022
document
Prajapati, Rajaram (author), Overkamp, Nick N. (author), Moesker, Niek (author), Happee, K. (author), van Bentem, R. (author), Danegulu, Anusha (author), Manandhar, Bikesh (author), Thapa, Amber Bahadur (author), Davids, J.C. (author)
The Kathmandu Valley in Nepal is facing a water quantity and quality crisis due to rapid urbanization and haphazard water and wastewater planning and management. Annually, groundwater extractions in the Kathmandu Valley exceed capture, resulting in groundwater table declines. Streams are often important sources of recharge to (or destination...
journal article 2021
document
Kindermann, P.E. (author), Brouwer, Wietske S. (author), van Hamel, A. (author), van Haren, Mick (author), Verboeket, Rik P. (author), Nane, G.F. (author), Lakhe, Hanik (author), Prajapati, Rajaram (author), Davids, J.C. (author)
Like other cities in the Kathmandu Valley, Bhaktapur faces rapid urbanisation and population growth. Rivers are negatively impacted by uncontrolled settlements in flood-prone areas, lowering permeability, decreasing channels widths, and waste blockage. All these issues, along with more extreme rain events during the monsoon due to climate...
journal article 2020
document
Davids, J.C. (author)
Data gaps as educational opportunities - mobilizing young researchers, citizen scientists, and mobile technology in data and resource scarce areas. This dissertation chronicles these themes through the lessons learned along the fledgling journey of SmartPhones4Water (S4W) and S4W-Nepal, from inception through the first few years of...
doctoral thesis 2019
document
Davids, J.C. (author), Rutten, M.M. (author), Pandey, Anusha (author), Devkota, Nischal (author), David Van Oyen, Wessel (author), Prajapati, Rajaram (author), van de Giesen, N.C. (author)
Wise management of water resources requires data. Nevertheless, the amount of streamflow data being collected globally continues to decline. Generating hydrologic data together with citizen scientists can help fill this growing hydrological data gap. Our aim herein was to (1) perform an initial evaluation of three simple streamflow measurement...
journal article 2019
document
Davids, J.C. (author), Devkota, Nischal (author), Pandey, Anusha (author), Prajapati, Rajaram (author), Ertis, Brandon A. (author), Rutten, M.M. (author), Lyon, Steve W. (author), Bogaard, T.A. (author), van de Giesen, N.C. (author)
Citizen science, as a complement to ground-based and remotely-sensed precipitation measurements, is a promising approach for improving precipitation observations. During the 2018 monsoon (May to September), SmartPhones4Water (S4W) Nepal—a young researcher-led water monitoring network—partnered with 154 citizen scientists to generate 6,656...
journal article 2019
document
Davids, J.C. (author), Rutten, M.M. (author), Shah, Ram Devi T. (author), Shah, Deep N. (author), Devkota, Nischal (author), Izeboud, P. (author), Pandey, Anusha (author), van de Giesen, N.C. (author)
Land development without thoughtful water supply planning can lead to unsustainability. In practice, management of our lands and waters is often unintegrated. We present new land-use, ecological stream health, water quality, and streamflow data from nine perennial watersheds in the Kathmandu Valley, Nepal, in the 2016 monsoon (i.e., August...
journal article 2018
document
Davids, J.C. (author), van de Giesen, N.C. (author), Rutten, M.M. (author)
Hydrologic data has traditionally been collected with permanent installations of sophisticated and accurate but expensive monitoring equipment at limited numbers of sites. Consequently, observation frequency and costs are high, but spatial coverage of the data is limited. Citizen Hydrology can possibly overcome these challenges by leveraging...
journal article 2017
document
Verkade, J.S. (author), Brown, J. D. (author), Davids, F. (author), Reggiani, P. (author), Weerts, A. H. (author)
Two statistical post-processing approaches for estimation of predictive hydrological uncertainty are compared: (i) ‘dressing’ of a deterministic forecast by adding a single, combined estimate of both hydrological and meteorological uncertainty and (ii) ‘dressing’ of an ensemble streamflow forecast by adding an estimate of hydrological...
journal article 2017
document
Wallinga, J. (author), Davids, F. (author), Dijkmans, J.W.A. (author)
Over the last decades luminescence dating techniques have been developed that allow earth scientists to determine the time of deposition of sediments. In this contribution we review: 1) the development of the methodology; 2) tests of the reliability of luminescence dating on Netherlands’ sediments; and 3) geological applications of the method in...
journal article 2007
document
Davids, M.A. (author)
master thesis 1998
document
Davids, M.A. (author)
master thesis 1998
document
Davids, M.A. (author)
report 1997
document
Davids, M.A. (author)
report 1997
document
Davids, M.A. (author)
report 1996
document
Davids, M.A. (author)
report 1996
document
Davids, S.W. (author)
master thesis 1991
Searched for: +
(1 - 20 of 24)

Pages

List view
Grid view