Results 1 to 10 of about 2,765,658 (238)

Redes sociales y correspondencia epistolar. Del análisis cualitativo de las relaciones personales a la reconstrucción de redes egocentradas [PDF]

REDES: Revista Hispana para el Análisis de Redes Sociales, 2011
En Historia, la correspondencia epistolar privada, en cuanto medio de comunicación entre personas, es la única fuente documental que revela las interacciones directas, no mediatizadas institucionalmente, entre actores sociales.
José María Imízcoz Beunza, Lara Arroyo Ruiz   +1 more
doaj   +8 more sources

Improved Y-Source Single-Stage Transformerless Micro-Inverter for PV Residential Applications [PDF]

Engineering and Technology Journal, 2020
Y-Source Impedance Network (YSN) is one of the most suitable for providing high voltage gain. It generatesa high voltage gain by using a small shoot-through duty cycle, which makes it suitable in applications require a wide range of input voltages such ...
Firas Salih, Oday Ahmed
doaj   +1 more source

Borrow from Source Models: Efficient Infrared Object Detection with Limited Examples

Applied Sciences, 2022
Recent deep models trained on large-scale RGB datasets lead to considerable achievements in visual detection tasks. However, the training examples are often limited for an infrared detection task, which may deteriorate the performance of deep detectors ...
Ruimin Chen, Shijian Liu, Jing Mu, Zhuang Miao, Fanming Li   +4 more
doaj   +1 more source

Efficient Protection Scheme Based on Y-Source Circuit Breaker in Bi-Directional Zones for MVDC Micro-Grids

Inventions, 2021
A new bi-directional circuit breaker is presented for medium-voltage dc (MVDC) systems. The Y-source impedance network topology is used to implement the breaker.
Haider Al-khafaf, Johnson Asumadu
doaj   +1 more source

Modelling and performance evaluation of diode‐assisted impedance source networks

IET Power Electronics, 2021
This paper deals with a family of two‐ and three‐windings coupled inductor‐based impedance source networks. They have been basically derived from the successful quasi‐Y‐source network (q‐YSN) by replacing one of its capacitors with a diode with different
Hamed Rezazadeh, Mohammad Monfared, Ali Nikbahar   +2 more
doaj   +1 more source

Y-Source Two-Stage Matrix Converter and Its Modulation Strategy

IEEE Access, 2020
Aiming at the defect of low voltage transfer ratio of two-stage matrix converter(TSMC), the proposed topology combines the Y-source network with the TSMC to form the Y-source two-stage matrix converter(YSTSMC) in this paper, and proposes its modulation ...
Rutian Wang, Pengfei Zhao, Jian Wang, Henan Hao   +3 more
doaj   +1 more source

Novel active clamped Y‐source network for improved voltage boosting [PDF]

IET Power Electronics, 2019
Y‐source impedance networks are one of the prominent two‐port networks for DC–DC and DC–AC applications with the higher boosting ability and reduced stress across the switching elements. However, the boosting ability of the Y‐source converter needs better magnetic coupling between the windings.
Reddiprasad Reddivari, Debashisha Jena
openaire   +1 more source

Quasi-Y Source network: A design and analysis approach for a DC-DC application

IEEE Latin America Transactions, 2021
This paper presents a detailed design methodology for a DC-DC converter based on the recent Quasi-Y Source impedance network, which has interesting characteristics for applications related to renewable energy sources. Despite the advantages of this particular impedance network, there is a lack in the current literature, of details regarding the design ...
Rafael Santos, Flávio Alessandro Serrão Gonçalves   +1 more
openaire   +3 more sources

Using Y-source network as a connector between turbine and network in the structure of variable speed wind turbine

International Journal of Power Electronics and Drive Systems (IJPEDS), 2021
Environmental factors such as air pollution and increase in global warming by using polluting fuels are the most important reasons of using renewable and clean energy that runs in global community. Wind energy is one of the most suitable and widely used kind of renewable energy which had been in consideration so well.
Mahmoud Zadehbagheri, Tole Sutikno, Rahim Ildarabadi   +2 more
openaire   +1 more source

Y-LineageTracker: a high-throughput analysis framework for Y-chromosomal next-generation sequencing data

BMC Bioinformatics, 2021
Background Y-chromosome DNA (Y-DNA) has been used for tracing paternal lineages and offers a clear path from an individual to a known, or likely, direct paternal ancestor. The advance of next-generation sequencing (NGS) technologies increasingly improves
Hao Chen, Yan Lu, Dongsheng Lu, Shuhua Xu   +3 more
doaj   +1 more source