Results 11 to 20 of about 2,661,721 (287)

Two-Way Contact Network Modeling for Identifying the Route of COVID-19 Community Transmission

open access: yesInformatics, 2021
In this study, we address the problem originated from the fact that “The Corona 19 Epidemiological Research Support System,” developed by the Korea Centers for Disease Control and Prevention, is limited to analyzing the Global Positioning System (GPS ...
Sung Jin Lee   +3 more
doaj   +1 more source

Tension of ground pressure on the foundations of railway catenary supports [PDF]

open access: yesE3S Web of Conferences, 2023
This paper presents the results of calculations of the values of soil pressure stresses on the base of the contact network supports by the developed program NDGFOKS in the programming language - C#.
Lesov K. S.   +3 more
doaj   +1 more source

Study of electromagnetic processes in the system “contact network—electric locomotive” while reducing the minimum opening angle of the thyristors in the rectifier-inverter converter

open access: yesВестник Научно-исследовательского института железнодорожного транспорта, 2020
A new method is proposed for increasing the power factor of an electric locomotive by changing the minimum opening angle of thyristors α0 of a rectifier-inverter converter.
Yu. M. Kulinich, D. Yu. Drogolov
doaj   +1 more source

Phylodynamic Analysis Complements Partner Services by Identifying Acute and Unreported HIV Transmission

open access: yesViruses, 2020
Tailoring public health responses to growing HIV transmission clusters depends on accurately mapping the risk network through which it spreads and identifying acute infections that represent the leading edge of cluster growth.
Ellsworth M. Campbell   +9 more
doaj   +1 more source

Accounting for space and uncertainty in real‐time location system‐derived contact networks

open access: yesEcology and Evolution, 2020
Point data obtained from real‐time location systems (RTLSs) can be processed into animal contact networks, describing instances of interaction between tracked individuals.
Trevor S. Farthing   +3 more
doaj   +1 more source

The additional consumption and savings of paid energy of traction substations when using on-board and stationary storage devices

open access: yesVestnik MGTU, 2023
In traction power supply systems for city electric transport without storage devices, a significant part of the recovery energy is usefully reused for the load in the process of inter-train flows along the contact network.
Katsay A. V.
doaj   +1 more source

Improvement of Video Measuring Systems for Electric Traction Network Diagnostics

open access: yesNauka ta progres transportu, 2021
Purpose. The purpose of the article is system analysis of the state of electric traction networks, as well as methods of complex diagnostics of the contact network from a moving laboratory car to increase the resolution capability of the systems for ...
І. В Доманський   +1 more
doaj   +1 more source

Contact surround in opportunistic networks [PDF]

open access: yes21st Annual IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, 2010
Is the temporal dimension alone sufficient to characterize contacts in opportunistic networks? Several studies analyze the temporal aspect of contacts with significant results concerning contact and inter-contact distributions. Nevertheless, only the temporal dimension does not give a complete overview of contact characterization.
Belblidia, Nadjet   +5 more
openaire   +1 more source

Investigation of the time process of arc separation of the contact network positioner support structures [PDF]

open access: yesE3S Web of Conferences, 2023
The contact network is important for the traction power supply system to supply power to electric locomotives. It is significant to ensure that the contact network works properly.
Zhu Siyu
doaj   +1 more source

Estimating within-school contact networks to understand influenza transmission [PDF]

open access: yes, 2012
Many epidemic models approximate social contact behavior by assuming random mixing within mixing groups (e.g., homes, schools and workplaces). The effect of more realistic social network structure on estimates of epidemic parameters is an open area of ...
Halloran, M. Elizabeth   +3 more
core   +3 more sources

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