Results 21 to 30 of about 810 (109)

Discovery of 59ms Pulsations from 1RXS J141256.0+792204 (Calvera) [PDF]

, 2010
We report on a multi-wavelength study of the compact object candidate 1RXS J141256.0+792204 (Calvera). Calvera was observed in the X-rays with XMM/EPIC twice for a total exposure time of ~50 ks. The source spectrum is thermal and well reproduced by a two
Barr, E., Burgay, M., Champion, D., Eatough, R. P., Esposito, P., Haberl, F., Israel, G. L., Kramer, M., Mignani, R. P., Pellizzoni, A., Possenti, A., Turolla, R., Zane, S.   +12 more
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Prevention of major depression in complex medically ill patients: preliminary results from a randomized, controlled trial [PDF]

, 2009
Background: Depression is highly prevalent in patients with physical illness and is associated with a diminished quality of life and poorer medical outcomes.
Alexander So, Berkman, Brazier, Bryk, Catherine Zdrojewski, Covic, Cuijpers, Daria Boffa, De Jonge, De Jonge, De Jonge, De Jonge, de Jonge, Evans, Fatima Bel Hadj, Friedrich Stiefel, Hays, Huyse, Juan Ruiz, Katon, Katon, Keller, Kirsch, Koopmans, Lustman, Mayou, Mossey, Musselman, Peter de Jonge, Radloff, Rasmussen, Sheehan, Silverstone, Smit, Stewart, Stiefel, Stiefel, Turner, Yves Dorogi   +38 more
core   +3 more sources

Compact Dual‐Band Coupler for Vehicular Beam‐Forming Array

International Journal of Antennas and Propagation, Volume 2017, Issue 1, 2017., 2017
A novel kind of compact dual‐band quadrature patch coupler for vehicular beam‐forming array is proposed for the first time in this paper. To keep the performance of the first operating frequency 2.4 GHz (for Bluetooth Low Energy (BLE)) and generate the second operating frequency 5.9 GHz (for Dedicated Short Range Communications (DSRC)) simultaneously ...
Dakui Wu, Guoxin Zheng, N. Nasimuddin
wiley   +1 more source

Playing/Field Urban Agriculture : ecological education and practice-based design [PDF]

, 2015
Dieser Titel ist parallel zur Online-Version in gedruckter Form im Universitätsverlag der TU Berlin unter der ISBN 978-3-7983-2726-9 erschienen.Urbane Landwirtschaft ist ein Thema, dass viele anspricht und dabei ständig neue AnhängerInnen gewinnt.
Bohn, Katrin, Ritzmann, Kristian
core   +1 more source

Turn Ratio, Substrates’ Permittivity Characterization, and Analysis of Split Ring Resonator Based Antenna

International Journal of Microwave Science and Technology, Volume 2015, Issue 1, 2015., 2015
The turn ratio, coupling space between sections, and substrate permittivity effects on spilt ring resonator (SRR) are investigated. The analysis of the presented SRR with respect to the effects of substrate and number of gaps per ring to further characterize its peculiarities is experimented with miniaturized capability as our intent.
Seyi S. Olokede, Nurul A. Mohd-Razif, Nor M. Mahyuddin, Walter De Raedt   +3 more
wiley   +1 more source

Particle Swarm Optimization for Multiband Metamaterial Fractal Antenna

Journal of Optimization, Volume 2013, Issue 1, 2013., 2013
The property of self‐similarity, recursive irregularity, and space filling capability of fractal antennas makes it useful for various applications in wireless communication, including multiband miniaturized antenna designs. In this paper, an effort has been made to use the metamaterial structures in conjunction with the fractal patch antenna, which ...
Balamati Choudhury, Sangeetha Manickam, R. M. Jha, Ling Wang   +3 more
wiley   +1 more source

The Flexible Group Spatial Keyword Query

, 2017
We present a new class of service for location based social networks, called the Flexible Group Spatial Keyword Query, which enables a group of users to collectively find a point of interest (POI) that optimizes an aggregate cost function combining both ...
D Papadias, G Cong, GR Hjaltason, K Yao, ME Ali, N Roussopoulos, X Cao, Z Li   +7 more
core   +1 more source

Metamaterials for Wireless Communications, Radiofrequency Identification, and Sensors

International Scholarly Research Notices, Volume 2012, Issue 1, 2012., 2012
This paper is focused on the application of concepts derived from metamaterials to the development of novel devices, circuits, and antennas of interest in wireless communications, radiofrequency identification (RFID), and sensors. Specifically, it is shown that artificial transmission lines based (or inspired) on metamaterials exhibit interesting ...
Ferran Martín, H.-T. Chen, W.-C. Liu
wiley   +1 more source

An Aggregated Stakeholder Perspective on Potential Benefits and Challenges [PDF]

, 2015
How can buildings be combined with agricultural production and what are the major potential benefits and challenges for the introduction of zero-acreage farming (ZFarming) in Berlin from the relevant stakeholders’ perspectives?
Busse, Maria, Dierich, Axel, Freisinger, Ulf B., Henckel, Dietrich, Sawicka, Magdalena, Siebert, Rosemarie, Specht, Kathrin, Thomaier, Susanne   +7 more
core   +3 more sources

Urban agriculture [PDF]

, 2013
V rámci současného evropského města přestává spousta lidí vnímat vztah mezi životem a přírodními procesy, které ho podporují. Zvětšování geografické i psychologické vzdáleností mezi producenty a konzumenty jídla zhoršuje současný neudržitelný způsob ...
Šárka, Jan
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