Results 21 to 30 of about 165,440 (238)

Precise Orbit Determination of GPS Satellites for Real Time Applications [PDF]

Journal of Astronomy and Space Sciences, 2001
The accuracy of GPS applications is heavily dependent on the satellite ephemeris and earth orientation parameter. Specially applications like as the real time monitoring of troposphere and ionosphere require real time or predicted ephemeris and earth ...
Hyung-Chul Lim, Pli-Ho Park, Jong-Uk Park, Jung-Ho Cho, Yong-Won Ahn   +4 more
doaj  

Perceived Concerns and Psychological Distress of Healthcare Workers Facing Three Early Stages of COVID-19 Pandemic

Frontiers in Psychology, 2022
BackgroundThis study analyzed the difference in psychological distress of the healthcare workers in three different periods of the coronavirus disease 2019 (COVID-19) pandemic in Argentina.
María Cristina Richaud, María Cristina Richaud, María Cristina Richaud, María Cristina Richaud, Leandro Eidman, Leandro Eidman, Jael Vargas Rubilar, Jael Vargas Rubilar, Jael Vargas Rubilar, Viviana Lemos, Viviana Lemos, Viviana Lemos, Belén Mesurado, Belén Mesurado, Belén Mesurado, María Carolina Klos, María Carolina Klos, María Carolina Klos, Marisa Rodriguez de Behrends, Marisa Rodriguez de Behrends, Rubén N. Muzio, Rubén N. Muzio, Rubén N. Muzio   +22 more
doaj   +1 more source

Biotic and Abiotic Stress Management in Grapevine: Recent Advances and Major Breakthroughs

Agronomy, 2023
Grapevine (Vitis vinifera L [...]
Rita B. Santos, Andreia Figueiredo
doaj   +1 more source

Reflexiones sobre los problemas de la innovación tecnológica en Colombia. Estudio desde el campo de la telemática

Revista Ibero-Americana de Estudos em Educação, 2015
En la sociedad colombiana domina una tendencia a la transferencia de tecnología que se contrapone a la innovación y desarrollo tecnológico endógeno en el campo de telemática.
José Daniel Cabrera Cruz, César D. Guerrero, Diana Teresa Parra Sánchez   +2 more
doaj   +3 more sources

Metodología para la implementación de un sistema de reconocimiento de objetos mediante técnicas de visión artificial aplicado a manipuladores robóticos

Iteckne, 2009
En el presente artículo, se realiza una breve descripción de una metodología implementada para el funcionamiento de de un sistema de visión artificial para la identificación de objetos, basado en criterios como la forma, el color y el tamaño.
Sergio Andrés zabala Vargas, Jhonny Marvin Maldonado, Gianni Yasser Rivera   +2 more
doaj   +1 more source

Tracking Control Design Using Sliding Mode Techniques for Satellite Formation Flying [PDF]

Journal of Astronomy and Space Sciences, 2003
Satellite formation flying is currently an active area of research in the aerospace engineering. So it has been researched by various authors. In this study, a tracking controller using sliding mode techniques was designed to control a satellite for the ...
Hyung-Chu Lim, Hyo-Choong Bang, Kwan-Dong Park, Pil-Ho Park   +3 more
doaj   +1 more source

Use of office spirometers in Flemish general practice: results of a telephone survey

Monaldi Archives for Chest Disease, 2016
Background. While office spirometry is seen as potentially useful and feasible in general practice, little is known about its use in Flemish general practice.
N. Boffin, V. Van der Stighelen, D. Paulus, P. Van Royen   +3 more
doaj   +1 more source

STREET LIGHTS INTELLIGENT SYSTEM, BASED ON THE INTERNET OF THINGS CONCEPT [PDF]

Applied Computer Science, 2018
The paper presents a project of a street lights intelligent system, which allows for public savings, as a result of more efficient roads and pavements lights management.
Sebastian CYGAN, Barbara BOROWIK, Bohdan BOROWIK   +2 more
doaj   +1 more source

GPS Data Modeling and GPS Noise Analysis

2006 IEEE 14th Signal Processing and Communications Applications, 2006
In this study, we model the daily recordings of the GPS (Global Positioning System) data, and examine the noise characteristics of its residual signal (which is the difference between the real data and the model.) Here, two main problems are studied: The first one is the issue of selecting proper model parameters that are fitted to GPS data. Note that,
Baykut, Suleyman, Akgul, Tayfun, Ergintav, Semih   +2 more
openaire   +2 more sources

Coordinated Multi‐Component Gradient Engineering of Catalyst Layers for Advanced Polymer Electrolyte Fuel Cells

Advanced Functional Materials, EarlyView.
This work presents a continuous linear gradient catalyst layer design, a general strategy for improving membrane electrode assemblies across electrochemical devices. Fabricated via a dual‐nozzle spray coating method, the architecture controls the Pt/carbon ratio, ionomer content and ionomer type across the catalyst layer, enhancing proton conduction ...
Shangwei Zhou, Matt P. Tudball, Yiming Guo, Bia Brandt, Adam Zucconi, Wenjia Du, Junfu Bu, Daniel H. C. Wan, Jianuo Chen, Emanuele Magliocca, Feng Ryan Wang, Alexander J.E. Rettie, Patrick S. Grant, Paul R. Shearing, Rhodri Jervis, Thomas S. Miller   +15 more
wiley   +1 more source