Zobrazeno 1 - 10
of 68
pro vyhledávání: '"Carlos Ulloa"'
Autor:
Uxia Garcia-Luis, Alejandro M. Gomez-San-Juan, Fermin Navarro-Medina, Carlos Ulloa-Sande, Alfonso Yñigo-Rivera, Alba Eva Peláez-Santos
Publikováno v:
Aerospace, Vol 11, Iss 3, p 231 (2024)
The integration of uncertainty analysis methodologies allows for improving design efficiency, particularly in the context of instruments that demand precise pointing accuracy, such as space telescopes. Focusing on the VINIS Earth observation telescop
Externí odkaz:
https://doaj.org/article/27f07e3e91254959831154d8ddaac92f
Autor:
Pedro Orgeira-Crespo, Guillermo Rey, Carlos Ulloa, Uxia Garcia-Luis, Pablo Rouco, Fernando Aguado-Agelet
Publikováno v:
Aerospace, Vol 9, Iss 6, p 286 (2022)
The design of a vehicle launch comprises many factors, including the optimization of the climb path and the distribution of the mass in stages. The optimization process has been addressed historically from different points of view, using proprietary
Externí odkaz:
https://doaj.org/article/28c9d195522c4db1b16086719a43ca94
Publikováno v:
PLoS ONE, Vol 16, Iss 2, p e0245004 (2021)
Communications, navigation, and other related systems need to have a well-defined antenna radiation pattern. In onboard vessel systems, the radiation pattern can be much different than the one obtained for an isolated antenna (because of the vessel's
Externí odkaz:
https://doaj.org/article/788e5f709b8d4f15839ca81f1f83a37a
Publikováno v:
Applied Sciences, Vol 11, Iss 2, p 476 (2021)
In recent years there has been a significant increase in images and videos circulating in social networks and media, edited with different techniques, including colorization. This has a negative impact on the forensic field because it is increasingly
Externí odkaz:
https://doaj.org/article/23c45d0357a34344a8e7c1a30bc084f3
Publikováno v:
Energies, Vol 13, Iss 11, p 2889 (2020)
This research paper introduces a mathematical model to predict the performance of photovoltaic–thermal systems (PV-T), based on a thin layer flexible panel and an air pipe, by using the Trnsys® software tool to simulate energetic systems. The main
Externí odkaz:
https://doaj.org/article/8d62152701da46d58e45550cf76d1921
Publikováno v:
Energies, Vol 6, Iss 7, Pp 3115-3133 (2013)
Although the Stirling engine was invented in 1816, this heat engine still continues to be investigated due to the variety of energy sources that can be used to power it (e.g., solar energy, fossil fuels, biomass, and geothermal energy). To study the
Externí odkaz:
https://doaj.org/article/52cf6e3a9d5f4bf5a8372e94415124e8
Publikováno v:
Energies, Vol 6, Iss 2, Pp 717-732 (2013)
This article describes a simple model obtained from a commercial Stirling engine and used for heating a caravan. The Stirling engine has been tested in the lab under different electrical load conditions, and the operating points obtained are presente
Externí odkaz:
https://doaj.org/article/995c74e273d0450d97888efa9d12bd46
Publikováno v:
Education Sciences, Vol 2, Iss 4, Pp 180-189 (2012)
A WebQuest is an Internet-based and inquiry-oriented learning activity. The aim of this work is to outline the creation of a WebQuest entitled “Power Generation Plants: Steam and Gas Turbines.” This is one of the topics covered in the course “T
Externí odkaz:
https://doaj.org/article/8722361fa1cb43fca3613e9afff6c285
Publikováno v:
La Granja: Revista de Ciencias de la Vida, Vol 19, Iss 1 (2014)
La exposición del suelo a temperaturas altas durante la ocurrencia de un incendio forestal, puede inducir el desarrollo de repelencia al agua y otros efectos que alteran la calidad del suelo, entre los que destacan: cambios en el contenido de carbon
Externí odkaz:
https://doaj.org/article/2d6f501e4ae44a54832ce34682d0c11c
Publikováno v:
Energies, Vol 9, Iss 11, p 969 (2016)
Tri-generation plants will have an important role in the near future in the residential sector where heating and cooling demands come into play throughout the year. Depending on the building’s location, the characteristics of its enclosure and its
Externí odkaz:
https://doaj.org/article/e6a1999383d3411fad3be6777de01cf0