Results 91 to 100 of about 8,316 (179)

Evaluation of burning detection using modified VGG19 for LULC classification changes [PDF]

ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
This study aims to evaluate the effectiveness of a modified architecture of convolutional neural network (CNN) VGG19 for detecting fires and changes in land use and land cover classification (LULC). Remote sensing data from the Landsat 8 Operational Land
M. F. Roberto, C. S. Faria Junior, J. D. A. D. S. Pereira, J. G. M. D. S. Decanini, M. J. D. S. Freitas   +4 more
doaj   +1 more source

Structural Patterns of the Occupy Movement on Facebook

, 2015
In this work we study a peculiar example of social organization on Facebook: the Occupy Movement -- i.e., an international protest movement against social and economic inequality organized online at a city level.
Bessi, Alessandro, Caldarelli, Guido, Del Vicario, Michela, Quattrociocchi, Walter, Scala, Antonio, Zhang, Qian, Zollo, Fabiana   +6 more
core  

Peak-to-average power ratio reduction of orthogonal frequency division multiplexing signals using improved salp swarm optimization-based partial transmit sequence model

ETRI Journal
Several peak-to-average power ratio (PAPR) reduction methods have been used in orthogonal frequency division multiplexing (OFDM) applications. Among the available methods, partial transmit sequence (PTS) is an efficient PAPR reduction method but can be ...
Vandana Tripathi, Prabhat Patel, Prashant Kumar Jain, Shailja Shukla   +3 more
doaj   +1 more source

On PAPR reduction in pilot-assisted optical OFDM communication systems [PDF]

, 2017
Ogunkoya, Funmilayo B., Popoola, Wasiu O., Sinanovic, Sinan   +2 more
core   +2 more sources

Public Policies and Women's Employment after Childbearing [PDF]

This paper examines how the public policy environment in the United States affects work by new mothers following childbirth. We examine four types of policies that vary across states and affect the budget constraint in different ways.
Han, Wen-Jui, Ruhm, Christopher J., Waldfogel, Jane, Washbrook, Elizabeth   +3 more
core  

Constellation Compaction Design to Reduce Both PAPR and Average Power in OFDM Systems

EURASIP Journal on Wireless Communications and Networking, 2010
This paper proposes a novel way to compact the constellation points in QAM modulation schemes and exploits this compaction to reduce the peak to average power ratio (PAPR) in orthogonal frequency division multiplexing (OFDM) systems.
Al-Shaikhi Ali
doaj  

Raindrop Size Distribution and Wind-Driven Rain Specific Attenuation: CCDF-Based Analysis at 18 and 38 GHz in Tropical Country

International Islamic University Malaysia Engineering Journal
Seasonal monsoons, frequency dependence, and wind effects were investigated for rain-specific attenuation at millimeter-wave (mm-wave) frequencies in a tropical environment.
Nurul Najwa Md Yusof, Omar Abdul Aziz, Lam Hong Yin, Jafri Din   +3 more
doaj   +1 more source

NON-LINEARITY DISTORTION MITIGATION OF DOWNLINK-LTE SYSTEM USING MODIFIED AMPLITUDE CLIPPING AND FREQUENCY DOMAIN RANDOMIZATION

Diyala Journal of Engineering Sciences, 2015
Wireless telecommunication systems are almost the most dominant field of the communication systems context nowadays especially the long-term evolution (LTE) system.
Montadar Abas Taher
doaj  

Performance evaluation of pilot-assisted PAPR reduction technique in optical OFDM systems [PDF]

, 2015
Ogunkoya, Funmilayo B., Popoola, Wasiu O., Shahrabi, Ali, Sinanovic, Sinan   +3 more
core   +2 more sources