Results 151 to 160 of about 324,497 (361)

OFDM system energy efficiency increasing method based on peak-factor decrease

Физика волновых процессов и радиотехнические системы, 2018
In this work the peak-factor decreasing method for the OFDM systems is proposed, based on the group spectrum subcarriers processing and the signal constellation rotation.
A.Kh. Sultanov, I.K. Meshkov, A.A. Ishmiyarov   +2 more
doaj  

A Unified Approach to Estimating Production Functions: Proxy Variables and Dynamic Panel Data

The Journal of Industrial Economics, EarlyView.
ABSTRACT We propose a new approach to production function estimation that integrates the strengths of the proxy‐variable (PV) and dynamic panel data (DPD) methods. Our framework augments the set of instruments for the level equation in Blundell and Bond [8] with a Berkson‐type instrument motivated by economic theory, following Olley and Pakes [28 ...
Jose Miguel Abito, Konstantinos Metaxoglou   +1 more
wiley   +1 more source

The Shadow Presence of U.S. Models of Parental Involvement in Postcolonial Multilingual Language and Literacy Reforms in Western Highland Mayan Rural School Districts in Guatemala

Journal of Sociolinguistics, EarlyView.
ABSTRACT This study offers a critique of imperialist relations implicit in U.S. Agency for International Development (USAID) pedagogical texts and capacity‐building resources designed to support decolonial Indigenous Mayan language and literacy instruction.
Jennifer F. Reynolds
wiley   +1 more source

Enhanced PAPR reduction in NOMA systems using modified SLM and PTS techniques for power-efficient 5G and beyond networks

Open Engineering
This paper presents an enhanced framework for peak-to-average power ratio (PAPR) reduction in non-orthogonal multiple access (NOMA) systems using modified Selective Mapping (m-SLM) and Partial Transmit Sequence (m-PTS) algorithms.
Kumar Arun, Gaur Nishant, Nanthaamornphong Aziz   +2 more
doaj   +1 more source

Orbital angular momentum multiplexing architecture for OAM/SDM passive optical networks

Journal of the European Optical Society-Rapid Publications
Orbital Angular Momentum (OAM) multiplexing is a technology of communication systems that enables high-capacity optical communication networks. One of the most important determinants of this technology is the channel capacity, loss of power, and Bit ...
Kadhim Ahmed C., Al-Ithawi Sabah H., Azzahrani Ahmad S.   +2 more
doaj   +1 more source

A Recursive Algorithm for the Error Probability Evaluation of $M$-QAM

, 2000
A general recursive algorithm for the efficient and accurate computation of the bit error rate (BER) of square-shaped $M$-QAM constellations over additive white Gaussian noise (AWGN) channels is derived.
Yang, L-L., Hanzo, L.
core  

Concurrent Measurement of O2 Production and Isoprene Emission During Photosynthesis: Pros, Cons and Metabolic Implications of Responses to Light, CO2 and Temperature

Plant, Cell &Environment, EarlyView.
ABSTRACT Traditional leaf gas exchange experiments have focused on net CO2 exchange (Anet). Here, using California poplar (Populus trichocarpa), we coupled measurements of net oxygen production (NOP), isoprene emissions and δ18O in O2 to traditional CO2/H2O gas exchange with chlorophyll fluorescence, and measured light, CO2 and temperature response ...
Kolby Jeremiah Jardine, Suman Som, Luiza Beraldi Gallo, Jilian Demus, Tomas Ferreira Domingues, Christina Marie Wistrom, Lianhong Gu, Guillaume Tcherkez, Ülo Niinemets   +8 more
wiley   +1 more source

Was hat die naturphilosophie geleistet, um die physikalischen vorstellungen von der constitution der materie zu bereichern ...

, 1873
Pr.--Friedrichs-gymnasium, Ber.Mode of access ...
Le Viseur, Prof. at Friedrichs-gymnasium, Ber.
core  

Virocell Necromass Provides Limited Plant Nitrogen and Elicits Rhizosphere Metabolites That Affect Phage Dynamics

Plant, Cell &Environment, EarlyView.
ABSTRACT Bacteriophages impact soil bacteria through lysis, altering the availability of organic carbon and plant nutrients. However, the magnitude of nutrient uptake by plants from lysed bacteria remains unknown, partly because this process is challenging to investigate in the field.
Vlastimil Novak, Michelle C. M. van Winden, Thomas V. Harwood, Rachel Neurath, Suzanne M. Kosina, Katherine B. Louie, Matthew B. Sullivan, Simon Roux, Karsten Zengler, Vivek K. Mutalik, Trent R. Northen   +10 more
wiley   +1 more source

Outcome measures for ambulant children with cerebral palsy after limb extremity orthopedic surgery: What should be measured and who should decide?

Developmental Medicine &Child Neurology, EarlyView.
Elizabeth R. Boyer
wiley   +1 more source