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Pedestrian navigation activity recognition method based on two-stream transformer and contrastive learning. [PDF]

iScience
Wang Q, Ma J, Fu M, Wang J, Bai YB, Jiang Z, Li H.   +6 more
europepmc   +1 more source

Deep Learning for Dynamic Prognostic Prediction in Minimally Invasive Surgery for Intracerebral Hemorrhage: Model Development and Validation Study.

JMIR Med Inform
Wang J, Shi J, Ye Q, Chen D, Sun Y, Pan C, Tang Y, Zhang P, Tang Z.   +8 more
europepmc   +1 more source

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A resonant DC-DC transformer

IEEE Transactions on Aerospace and Electronic Systems, 1993
The characteristics of a push-pull parallel resonant converter (PPRC) when operated as a DC-DC transformer were investigated theoretically and experimentally. In the DC-DC transformer region, the voltage transfer ratio of the PPRC was found to be practically constant and independent of the input voltage and load.
G. Ivensky, A. Abramovitz, M. Gulko, S. Ben-Yaakov   +3 more
openaire   +1 more source

Potentials and Challenges of Multiwinding Transformer-Based DC-DC Converters for Solid-State Transformer

IECON 2021 – 47th Annual Conference of the IEEE Industrial Electronics Society, 2021
Multiwinding-Transfomer-based (MTB) DC-DC converter is an interesting possibility to interconnect several energy systems and to offer higher power density because of the reduction of transformer core material and reduction of power converter stages. MTB DC-DC converters can be considered as an interesting compromise between non-modular and modular DC ...
Thiago Pereira, Felix Hoffmann, Marco Liserre   +2 more
openaire   +1 more source

A DC Transformer

IEEE Transactions on Power Electronics, 2014
A component level dc transformer is described in which no alternating currents or voltages are present. It operates by combining features of a homopolar motor and a homopolar generator, both dc devices, such that the output voltage of a dc power supply can be stepped up (or down) with a corresponding step down (or up) in the current.
Robert C. Youngquist, Curtis M. Ihlefeld, Stanley O. Starr   +2 more
openaire   +1 more source

Research on a novel DC-DC transformer

2011 International Conference on Electric Information and Control Engineering, 2011
With the development of power electronic technology and the distributed generations, it is expected that transformer function can be realized by using power devices and the bulk and cost of transformer will be reduced. So the DC-DC transformers whose voltage isn't regulated with the load and the input voltage are focused on in resent years.
null Xianjin Zhang, null Caihong Fan
openaire   +1 more source