Results 61 to 70 of about 8,316 (179)

CCDF -Optimized Wideband Predistortion for Frequency-Hopped Signals Using Multitone Training

open access: yesDefence Science Journal
This paper presents a wideband digital predistorter designed for frame-based frequency-hopped Long-Term Evolution (LTE) signals to mitigate nonlinearities in the high-efficiency operating region of power amplifiers. In frequency-hopping systems, the frequency-dependent nonlinear behaviour of the power amplifier becomes even more critical, necessitating
Jaya Mishra, Meenakshi Rawat
openaire   +1 more source

A subset multicanonical Monte Carlo method for simulating rare failure events

open access: yes, 2016
Estimating failure probabilities of engineering systems is an important problem in many engineering fields. In this work we consider such problems where the failure probability is extremely small (e.g $\leq10^{-10}$).
Chen, Xinjuan, Li, Jinglai
core   +1 more source

Flexibility Assessment in AC/DC Hybrid Distribution Networks via Spatiotemporal Source‐Load Scenario Generation

open access: yesIET Generation, Transmission &Distribution, Volume 20, Issue 1, January/December 2026.
This study develops a spatiotemporal source‐load scenario generation framework using Copula‐Markov chains, R‐Vine Copulas and user behaviour models. A novel flexibility assessment framework quantifies supply‐demand imbalances, showing flexibility resources like demand response and VSC capacity shape system flexibility. ABSTRACT Global energy transition
Kang Yue   +5 more
wiley   +1 more source

Teknik Pengiriman File Audio Berbasis Software Defined Radio pada Kanal Komunikasi dalam Ruangan dengan Multicarrier OFDM

open access: yesJurnal Elkomika
ABSTRAK Transmisi audio pada kanal indoor dipengaruhi oleh efek multipath fading yang dapat mengganggu kualitas sinyal. Multicarrier OFDM digunakan sebagai solusi untuk mengatasi fenomena ini.
FIGA AGHANI ROSYID   +2 more
doaj   +1 more source

SSB Pruned DFT-Spread FBMC Signal With Low PAPR in Direct-Detection PONs

open access: yesIEEE Photonics Journal, 2020
Filter bank multi-carrier (FBMC) using offset quadrature amplitude modulation (OQAM) has recently attracted increasing interests for the next-generation high-speed optical transmission systems, due to the salient FBMC modulation advantages in terms of ...
Xiaoling Zhang   +6 more
doaj   +1 more source

What Can CCDF Learn from the Research on Children's Health and Safety in Child Care?

open access: yes, 2012
A major goal of CCDF is to provide low-income children with access to high-quality care that supports their health and safety. Research underscores the role of health and safety in child care in supporting children's physical, cognitive, and social-emotional development, all of which contribute to their school readiness.
Banghart, Patti L., Kreader, J. Lee
openaire   +2 more sources

Quantitative patterns in drone wars

open access: yes, 2015
Attacks by drones (i.e., unmanned combat air vehicles) continue to generate heated political and ethical debates. Here we examine the quantitative nature of drone attacks, focusing on how their intensity and frequency compare with that of other forms of ...
Dodds, Peter Sheridan   +2 more
core   +1 more source

Constraint‐Guided BO‐GCN Surrogate for Three‐Phase Unbalanced Power Flow in DER‐Integrated Distribution Systems

open access: yesIET Renewable Power Generation, Volume 20, Issue 1, January/December 2026.
This paper presents an admittance‐informed Bayesian‐Optimised Graph Convolutional Network (BO‐GCN) for fast three‐phase power flow evaluation in distribution systems with high renewable penetration. By embedding electrical connectivity through neighbourhood aggregation weighted by coupling strengths and employing a physically structured decoder with ...
Amir Hossein Baharvand   +2 more
wiley   +1 more source

System level analysis of heterogeneous networks under imperfect traffic hotspot localization

open access: yes, 2016
We study, in this paper, the impact of imperfect small cell positioning with respect to traffic hotspots in cellular networks. In order to derive the throughput distribution in macro and small cells, we firstly perform static level analysis of the system
Chahed, Tijani   +2 more
core   +3 more sources

A benefit‐cost analysis of child care subsidy expansions: The New York State case

open access: yesContemporary Economic Policy, Volume 44, Issue 1, Page 131-151, January 2026.
Abstract Proposals to expand child care assistance have proliferated at the national and state levels. This paper uses a novel approach to estimate the benefits and costs of providing child care subsidies to families up to three times the federal poverty line while supplementing child care worker compensation — a recently‐enacted reform in New York ...
Robert Paul Hartley   +5 more
wiley   +1 more source

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