Results 81 to 90 of about 32,263 (311)

Performance Enhancements for Asynchronous Random Access Protocols over Satellite

, 2011
In this paper, a novel enhancement of the well known ALOHA random access mechanism is presented which largely extends the achievable throughput compared to traditional ALOHA and provides significantly lower packet loss rates. The novel mechanism, called
Kissling, Christian, Christian Kissling
core   +1 more source

Performances of 16QAM with fading compensation and postdetection diversity reception in satellite mobile channels [PDF]

, 1997
This paper studies the effects of N-branch postdetection selection diversity reception, where N = 1, 2, 3 or 4, incorporated with fading compensation on a digital satellite mobile system. The digital satellite mobile system transmits a pilot-symbol-aided
Lau, HK, Cheung, SW
core   +1 more source

La télévision, les nouveaux rôles et espaces publics féminins dans les sociétés arabes contemporaines

Les Cahiers d’EMAM, 2016
Over the past 14 years, there has been an exponential increase of satellite TV channels in the Arab World. The influential presence of anchorwomen in Arab Satellite Channels is an irreversible phenomenon.
Hasna Hussein
doaj   +1 more source

Orbital Geometry‐Governed Response of Pressure‐Tunable Quantum Defects in hBN

Advanced Functional Materials, EarlyView.
Defects in hBN act as ultrasensitive quantum manometers when the energy of the intradefect optical transitions is modified by lattice compression. The orbital geometry of the electron wave functions governs how electron hopping and Coulomb interactions react uniquely to the reduction of the van der Waals gap and in‐plane compression, leading to robust ...
Magdalena Grzeszczyk, Danis I. Badrtdinov, Kenji Watanabe, Takashi Taniguchi, Cyrus E. Dreyer, Malte Rösner, Maciej Koperski   +6 more
wiley   +1 more source

Titanium Suboxides Responsible for Electronic Anomaly Near Room Temperature in the Ti3C2Tx MXene

Advanced Functional Materials, EarlyView.
Our multi‐technique study reveals that the near‐room‐temperature anomaly in Ti3C2Tx MXene is linked to titanium suboxide nanodomains, including Ti3O5, embedded within the MXene host. Their temperature‐driven transformation provides an alternative explanation to solvent‐ and swelling‐based models and offers new insight into the thermally activated ...
Bence G. Márkus, Bradlee J. McIntosh, Lili Vajtai, Anna Nyáry, Sándor H. Sipos, Nirmal J. Ghimire, Ferenc Simon, László Forró, Dávid Beke   +8 more
wiley   +1 more source

Precipitation Estimation: From the RAO to EURAINSAT and Beyond [PDF]

, 2004
The key objective of the project "Use of the MSG SEVIRI channels in a combined SSM/I, TRMM and geostationary IR method for rapid updates of rainfall" is the development of algorithms for rapid-update of satellite rainfall estimations at the geostationary
Poiares Baptista, J.P.V., Mantovani, S., Sanderson V., Buzzi, A., Levizzani V., J. Kidd, Giuliani, G., Cattani E., Mantovani S., Tassa, A., Smith E. A., Bauer, P., Cimini, D., Prodi, F., Fantini, M., Purdom J. F. W., D. Capacci, Natali S., G. Messeri, Hinsman D. E., P. Malguzzi, Vicente G. A., Medaglia, C.M., Cattani, E., M. Celano, Adamo C., Battaglia A., C. Adamo, S. Dietrich, J. Steinwagner, Poli V., Torricella F., Levizzani, V., Torricella, F., Purdom, J.F.W., F. S. Marzano, Steinwagner J., PORCU', Federico, Pasqui M., Kniveton, D., Villani M. G., Schmelz J., A. Mugnai, Celano, M., Meneguzzo F., Marzano, F.S., J. Schmetz, S. Pinori, Cimini D., Lahav, R., Alberoni P. P., Tapiador F. J., Rosenfeld, D., Tripoli G. J., Porcù, F., Ortolani, A., P. Bauer, Caracciolo, C., Kidd J., Prodi F., M. Kastner, Davolio S., Lahav R., Bauer P., S. Mantovani, G. J. Tripoli, Layberry, R., Malguzzi, P., Pasqui, M., Villani, M.G., Dietrich S., Orlandi A., Vicente, G.A., Kastner M., Messeri G., Orlandi, A., Panegrossi, G., Costa, M.J., Capacci, D., Mugnai, A., PRODI, Franco, M. Pasqui, Tampieri, F., Kidd C., Schmetz, J., A. Orlandi, Tampieri F., Smith, E.A., M. G. Villani, D. E. Hinsman, Tapiador, F.J., Ortolani A., A. Tassa, A. Ortolani, Caracciolo C., G. Giuliani, Pinori, S., Panegrossi G., Antonimi, A., F. Tampieri, F. Torricella, CARACCIOLO, Clelia, Turk, F. J., M. Fantini, Tassa A., Alberini, P. P., R. Solomon, Kästner, Martina, Hinsman, D.E., E. A. Smith, Michele, S. di, Kniveton D., Celano M., R. Lahav, C. Kidd, F. Meneguzzo, Natali, S., S. Natali, E. Cattani, Adamo, C., Kidd, C., Messeri, G., Medaglia C. M., Porcu F., S. Di Michele, A. Khain, J. P. V. Poiares Baptista, G. A. Vicente, A. Battaglia, M. J. Costa, G. Panegrossi, D. Rosenfeld, Solomon, R., R. Layberry, Poli, V., Antonini A., I. Lensky, Melani, S., Costa M. J., Kidd, J., Khain, A., S. Melani, Malguzzi P., Tripoli, G. J., Di Michele S., Meneguzzo, F., Lensky, I., Buzzi A., Layberry R., Maurizi, A., C. M. Medaglia, P. P. Alberoni, Sanderson, V., V. Sanderson, Steinwagner, Jörg, A. Maurizi, V. Poli, Fantini M., A. Antonini, Battaglia, A., V. Levizzani, Melani S., F. J. Turk, Khain A., F. J. Tapiador, Pinori S., Marzano F. S., J. F. W. Purdom, Capacci D., D. Cimini, Mugnai A., Baptista J. P. V. P., Maurizi A., Rosenfeld D., Diavolio, S., Solomon R., Dietrich, S., Lensky I., D. Kniveton, A. Buzzi, Turk F. J., Giuliani G., S. Diavolio   +182 more
core  

Extending the Global Space-Based Inter-Calibration System (GSICS) to Tie Satellite Radiances to an Absolute Scale

Remote Sensing, 2020
The Global Space-based Inter-Calibration System (GSICS) routinely monitors the calibration of various channels of Earth-observing satellite instruments and generates GSICS Corrections, which are functions that can be applied to tie them to reference ...
Tim J. Hewison, David R. Doelling, Constantine Lukashin, David Tobin, Viju O. John, Sauli Joro, Bojan Bojkov   +6 more
doaj   +1 more source

Integrated Field‐Free SOT Domain‐Wall Synapses and MTJ Stochastic Neurons for Hardware Boltzmann Machines

Advanced Functional Materials, EarlyView.
Field‐free spin‐orbit torque domain‐wall synapses integrated with stochastic MTJ neurons enable compact hardware Boltzmann machines. Leveraging intrinsic stochasticity and multi‐level conductance, the system achieves efficient probabilistic learning with high accuracy, demonstrating a scalable spintronic platform for energy‐efficient edge AI.
Aijaz H. Lone, Meng Tang, Camelia Florica, Bin He, Jingkai Xu, Selma Amara, Georgian Melinte, Xixiang Zhang, Gianluca Setti   +8 more
wiley   +1 more source

Intercomparison of satellite-based and model-based rainfall analyses

, 2006
Four satellite rain estimations based on microwave (MW), infrared (IR) or combined MW-IR techniques are compared with the BOlogna Limited Area Model (BOLAM) rain forecast for a severe weather event (8–13 November 2001) over the western Mediterranean Sea.
S. Davolio, Kästner, Martina, M. Kastner, Davolio, Silvio, Torricella, Francesca, F. Torricella   +5 more
core   +1 more source

Ultrasensitive Anti‐Stokes Luminescence Thermometry in Transition Metal Dichalcogenide Monolayers

Advanced Functional Materials, EarlyView.
We demonstrate a highly sensitive nanothermometer using anti‐Stokes photoluminescence, also known as photoluminescence upconversion (UPL), in monolayer tungsten disulfide. A strong resonantly enhanced UPL is observed, confirming the central role of optical phonons in the PL upconversion mechanism.
Sharada Nagarkar, Fahrettin Sarcan, Elanur Hut, Emiliano R. Martins, Stuart A. Cavill, Thomas F. Krauss, Yue Wang   +6 more
wiley   +1 more source